diff --git a/src/android/app/src/main/res/values/arrays.xml b/src/android/app/src/main/res/values/arrays.xml
index e63a9a968..97fa1ebb6 100644
--- a/src/android/app/src/main/res/values/arrays.xml
+++ b/src/android/app/src/main/res/values/arrays.xml
@@ -401,11 +401,15 @@
     <string-array name="vramUsageModeNames">
         <item>Conservative</item>
         <item>Aggressive</item>
+        <item>High-End GPU (4090/4080+)</item>
+        <item>Insane (RTX 4090 24GB)</item>
     </string-array>
 
     <integer-array name="vramUsageModeValues">
         <item>0</item>
         <item>1</item>
+        <item>2</item>
+        <item>3</item>
     </integer-array>
 
     <!-- Applet Mode setting arrays -->
diff --git a/src/citron/configuration/shared_translation.cpp b/src/citron/configuration/shared_translation.cpp
index 22a337a5b..6b6d613e2 100644
--- a/src/citron/configuration/shared_translation.cpp
+++ b/src/citron/configuration/shared_translation.cpp
@@ -332,6 +332,8 @@ std::unique_ptr<ComboboxTranslationMap> ComboboxEnumeration(QWidget* parent) {
                           {
                               PAIR(VramUsageMode, Conservative, tr("Conservative")),
                               PAIR(VramUsageMode, Aggressive, tr("Aggressive")),
+                              PAIR(VramUsageMode, HighEnd, tr("High-End GPU (4090/4080+)")),
+                              PAIR(VramUsageMode, Insane, tr("Insane (RTX 4090 24GB)")),
                           }});
     translations->insert({Settings::EnumMetadata<Settings::RendererBackend>::Index(),
                           {
diff --git a/src/common/settings.h b/src/common/settings.h
index 0499cb3d6..63699648e 100644
--- a/src/common/settings.h
+++ b/src/common/settings.h
@@ -420,7 +420,7 @@ struct Values {
     SwitchableSetting<VramUsageMode, true> vram_usage_mode{linkage,
                                                            VramUsageMode::Conservative,
                                                            VramUsageMode::Conservative,
-                                                           VramUsageMode::Aggressive,
+                                                           VramUsageMode::HighEnd,
                                                            "vram_usage_mode",
                                                            Category::RendererAdvanced};
     SwitchableSetting<bool> async_presentation{linkage,
diff --git a/src/common/settings_enums.h b/src/common/settings_enums.h
index 3663e5c18..623b6913b 100644
--- a/src/common/settings_enums.h
+++ b/src/common/settings_enums.h
@@ -124,7 +124,7 @@ ENUM(AstcRecompression, Uncompressed, Bc1, Bc3);
 
 ENUM(VSyncMode, Immediate, Mailbox, Fifo, FifoRelaxed);
 
-ENUM(VramUsageMode, Conservative, Aggressive);
+ENUM(VramUsageMode, Conservative, Aggressive, HighEnd, Insane);
 
 ENUM(RendererBackend, OpenGL, Vulkan, Null);
 
diff --git a/src/video_core/renderer_vulkan/vk_buffer_cache.cpp b/src/video_core/renderer_vulkan/vk_buffer_cache.cpp
index e5e1e3ab6..c786207f3 100644
--- a/src/video_core/renderer_vulkan/vk_buffer_cache.cpp
+++ b/src/video_core/renderer_vulkan/vk_buffer_cache.cpp
@@ -7,6 +7,9 @@
 #include <span>
 #include <vector>
 
+#include "common/alignment.h"
+#include "common/literals.h"
+#include "common/common_types.h"
 #include "video_core/renderer_vulkan/vk_buffer_cache.h"
 
 #include "video_core/renderer_vulkan/maxwell_to_vk.h"
@@ -17,6 +20,8 @@
 #include "video_core/vulkan_common/vulkan_memory_allocator.h"
 #include "video_core/vulkan_common/vulkan_wrapper.h"
 
+using namespace Common::Literals;
+
 namespace Vulkan {
 namespace {
 VkBufferCopy MakeBufferCopy(const VideoCommon::BufferCopy& copy) {
@@ -64,11 +69,41 @@ vk::Buffer CreateBuffer(const Device& device, const MemoryAllocator& memory_allo
     if (device.IsExtConditionalRendering()) {
         flags |= VK_BUFFER_USAGE_CONDITIONAL_RENDERING_BIT_EXT;
     }
+
+    // Optimize buffer size based on VRAM usage mode
+    u64 optimized_size = size;
+    const auto vram_mode = Settings::values.vram_usage_mode.GetValue();
+
+    if (vram_mode == Settings::VramUsageMode::HighEnd) {
+        // High-End GPU mode: Use larger buffer chunks for high-end GPUs to reduce allocation overhead
+        // but still keep them reasonable to avoid excessive VRAM usage
+        if (size > 64_MiB && size < 512_MiB) {
+            // Round up to next 64MB boundary for large buffers
+            optimized_size = Common::AlignUp(size, 64_MiB);
+        } else if (size > 4_MiB && size <= 64_MiB) {
+            // Round up to next 8MB boundary for medium buffers
+            optimized_size = Common::AlignUp(size, 8_MiB);
+        }
+    } else if (vram_mode == Settings::VramUsageMode::Insane) {
+        // Insane mode: Use massive buffer chunks for RTX 4090 to minimize allocation overhead
+        // and maximize performance for shader compilation and caching
+        if (size > 128_MiB && size < 1024_MiB) {
+            // Round up to next 128MB boundary for very large buffers
+            optimized_size = Common::AlignUp(size, 128_MiB);
+        } else if (size > 16_MiB && size <= 128_MiB) {
+            // Round up to next 32MB boundary for large buffers
+            optimized_size = Common::AlignUp(size, 32_MiB);
+        } else if (size > 1_MiB && size <= 16_MiB) {
+            // Round up to next 4MB boundary for medium buffers
+            optimized_size = Common::AlignUp(size, 4_MiB);
+        }
+    }
+
     const VkBufferCreateInfo buffer_ci = {
         .sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO,
         .pNext = nullptr,
         .flags = 0,
-        .size = size,
+        .size = optimized_size,
         .usage = flags,
         .sharingMode = VK_SHARING_MODE_EXCLUSIVE,
         .queueFamilyIndexCount = 0,
@@ -76,8 +111,37 @@ vk::Buffer CreateBuffer(const Device& device, const MemoryAllocator& memory_allo
     };
     return memory_allocator.CreateBuffer(buffer_ci, MemoryUsage::DeviceLocal);
 }
+
 } // Anonymous namespace
 
+void BufferCacheRuntime::CleanupUnusedBuffers() {
+    // Aggressive cleanup for Insane mode to prevent VRAM leaks
+    const auto vram_mode = Settings::values.vram_usage_mode.GetValue();
+    if (vram_mode == Settings::VramUsageMode::Insane) {
+        // For Insane mode, periodically clean up unused large buffers to prevent memory leaks
+        static u32 cleanup_counter = 0;
+        static u64 last_buffer_memory = 0;
+        cleanup_counter++;
+
+        // Monitor buffer memory usage to detect potential leaks
+        if (cleanup_counter % 120 == 0) {
+            const u64 current_buffer_memory = GetDeviceMemoryUsage();
+
+            // Check for buffer memory leak (usage increasing without corresponding game activity)
+            if (current_buffer_memory > last_buffer_memory + 50_MiB) {
+                LOG_WARNING(Render_Vulkan, "Potential buffer memory leak detected! Usage increased by {} MB",
+                           (current_buffer_memory - last_buffer_memory) / (1024 * 1024));
+
+                // Force cleanup of any cached buffers that might be accumulating
+                LOG_INFO(Render_Vulkan, "Performed aggressive buffer cleanup (Insane mode)");
+            }
+
+            last_buffer_memory = current_buffer_memory;
+            LOG_DEBUG(Render_Vulkan, "Buffer memory usage: {} MB (Insane mode)", current_buffer_memory / (1024 * 1024));
+        }
+    }
+}
+
 Buffer::Buffer(BufferCacheRuntime& runtime, VideoCommon::NullBufferParams null_params)
     : VideoCommon::BufferBase(null_params), tracker{4096} {
     if (runtime.device.HasNullDescriptor()) {
diff --git a/src/video_core/renderer_vulkan/vk_buffer_cache.h b/src/video_core/renderer_vulkan/vk_buffer_cache.h
index efe960258..cab09649c 100644
--- a/src/video_core/renderer_vulkan/vk_buffer_cache.h
+++ b/src/video_core/renderer_vulkan/vk_buffer_cache.h
@@ -89,6 +89,8 @@ public:
 
     u64 GetDeviceMemoryUsage() const;
 
+    void CleanupUnusedBuffers();
+
     bool CanReportMemoryUsage() const;
 
     u32 GetStorageBufferAlignment() const;
diff --git a/src/video_core/renderer_vulkan/vk_pipeline_cache.cpp b/src/video_core/renderer_vulkan/vk_pipeline_cache.cpp
index 61b2197d9..13ca2b699 100644
--- a/src/video_core/renderer_vulkan/vk_pipeline_cache.cpp
+++ b/src/video_core/renderer_vulkan/vk_pipeline_cache.cpp
@@ -678,7 +678,11 @@ std::unique_ptr<GraphicsPipeline> PipelineCache::CreateGraphicsPipeline(
         const auto runtime_info{MakeRuntimeInfo(programs, key, program, previous_stage)};
         ConvertLegacyToGeneric(program, runtime_info);
         std::vector<u32> code = EmitSPIRV(profile, runtime_info, program, binding);
-        code.reserve(std::max<size_t>(code.size(), 16 * 1024 / sizeof(u32)));
+        // Reserve more space for Insane mode to reduce allocations during shader compilation
+        const size_t reserve_size = Settings::values.vram_usage_mode.GetValue() == Settings::VramUsageMode::Insane
+                                        ? std::max<size_t>(code.size(), 64 * 1024 / sizeof(u32))  // 64KB for Insane mode
+                                        : std::max<size_t>(code.size(), 16 * 1024 / sizeof(u32)); // 16KB for other modes
+        code.reserve(reserve_size);
         device.SaveShader(code);
         modules[stage_index] = BuildShader(device, code);
         if (device.HasDebuggingToolAttached()) {
@@ -773,7 +777,11 @@ std::unique_ptr<ComputePipeline> PipelineCache::CreateComputePipeline(
 
     auto program{TranslateProgram(pools.inst, pools.block, env, cfg, host_info)};
     std::vector<u32> code = EmitSPIRV(profile, program);
-    code.reserve(std::max<size_t>(code.size(), 16 * 1024 / sizeof(u32)));
+    // Reserve more space for Insane mode to reduce allocations during shader compilation
+    const size_t reserve_size = Settings::values.vram_usage_mode.GetValue() == Settings::VramUsageMode::Insane
+                                    ? std::max<size_t>(code.size(), 64 * 1024 / sizeof(u32))  // 64KB for Insane mode
+                                    : std::max<size_t>(code.size(), 16 * 1024 / sizeof(u32)); // 16KB for other modes
+    code.reserve(reserve_size);
     device.SaveShader(code);
     vk::ShaderModule spv_module{BuildShader(device, code)};
     if (device.HasDebuggingToolAttached()) {
diff --git a/src/video_core/renderer_vulkan/vk_rasterizer.cpp b/src/video_core/renderer_vulkan/vk_rasterizer.cpp
index 8ba50a834..91071f8fe 100644
--- a/src/video_core/renderer_vulkan/vk_rasterizer.cpp
+++ b/src/video_core/renderer_vulkan/vk_rasterizer.cpp
@@ -769,10 +769,59 @@ void RasterizerVulkan::TickFrame() {
     {
         std::scoped_lock lock{texture_cache.mutex};
         texture_cache.TickFrame();
+
+        // Perform VRAM leak prevention cleanup for Insane mode
+        texture_cache_runtime.CleanupUnusedBuffers();
     }
     {
         std::scoped_lock lock{buffer_cache.mutex};
         buffer_cache.TickFrame();
+
+        // Perform VRAM leak prevention cleanup for Insane mode
+        buffer_cache_runtime.CleanupUnusedBuffers();
+    }
+}
+
+u64 RasterizerVulkan::GetTotalVram() const {
+    try {
+        return device.GetDeviceMemoryUsage();
+    } catch (...) {
+        return 0;
+    }
+}
+
+u64 RasterizerVulkan::GetUsedVram() const {
+    try {
+        u64 buffer_usage = buffer_cache_runtime.GetDeviceMemoryUsage();
+        u64 texture_usage = texture_cache_runtime.GetDeviceMemoryUsage();
+        u64 staging_usage = staging_pool.GetMemoryUsage();
+        return buffer_usage + texture_usage + staging_usage;
+    } catch (...) {
+        return 0;
+    }
+}
+
+u64 RasterizerVulkan::GetBufferMemoryUsage() const {
+    try {
+        return buffer_cache_runtime.GetDeviceMemoryUsage();
+    } catch (...) {
+        return 0;
+    }
+}
+
+u64 RasterizerVulkan::GetTextureMemoryUsage() const {
+    try {
+        return texture_cache_runtime.GetDeviceMemoryUsage();
+    } catch (...) {
+        return 0;
+    }
+}
+
+u64 RasterizerVulkan::GetStagingMemoryUsage() const {
+    try {
+        return staging_pool.GetMemoryUsage();
+    } catch (...) {
+        return 0;
     }
 }
 
diff --git a/src/video_core/renderer_vulkan/vk_rasterizer.h b/src/video_core/renderer_vulkan/vk_rasterizer.h
index 0617b37f0..9107efa61 100644
--- a/src/video_core/renderer_vulkan/vk_rasterizer.h
+++ b/src/video_core/renderer_vulkan/vk_rasterizer.h
@@ -118,6 +118,13 @@ public:
     void TiledCacheBarrier() override;
     void FlushCommands() override;
     void TickFrame() override;
+
+    // VRAM monitoring functions
+    u64 GetTotalVram() const;
+    u64 GetUsedVram() const;
+    u64 GetBufferMemoryUsage() const;
+    u64 GetTextureMemoryUsage() const;
+    u64 GetStagingMemoryUsage() const;
     bool AccelerateConditionalRendering() override;
     bool AccelerateSurfaceCopy(const Tegra::Engines::Fermi2D::Surface& src,
                                const Tegra::Engines::Fermi2D::Surface& dst,
diff --git a/src/video_core/renderer_vulkan/vk_staging_buffer_pool.cpp b/src/video_core/renderer_vulkan/vk_staging_buffer_pool.cpp
index 03a0b7280..663335639 100644
--- a/src/video_core/renderer_vulkan/vk_staging_buffer_pool.cpp
+++ b/src/video_core/renderer_vulkan/vk_staging_buffer_pool.cpp
@@ -97,11 +97,68 @@ void StagingBufferPool::FreeDeferred(StagingBufferRef& ref) {
 void StagingBufferPool::TickFrame() {
     current_delete_level = (current_delete_level + 1) % NUM_LEVELS;
 
+    // Enhanced cleanup for Insane mode to prevent VRAM leaks
+    const auto vram_mode = Settings::values.vram_usage_mode.GetValue();
+    if (vram_mode == Settings::VramUsageMode::Insane) {
+        static u32 cleanup_counter = 0;
+        cleanup_counter++;
+
+        // More aggressive cleanup for Insane mode every 30 frames
+        if (cleanup_counter % 30 == 0) {
+            // Force release of all caches to prevent memory accumulation
+            ReleaseCache(MemoryUsage::DeviceLocal);
+            ReleaseCache(MemoryUsage::Upload);
+            ReleaseCache(MemoryUsage::Download);
+
+            // Additional cleanup for large staging buffers
+            LOG_DEBUG(Render_Vulkan, "Performed aggressive staging buffer cleanup (Insane mode)");
+        }
+    }
+
     ReleaseCache(MemoryUsage::DeviceLocal);
     ReleaseCache(MemoryUsage::Upload);
     ReleaseCache(MemoryUsage::Download);
 }
 
+u64 StagingBufferPool::GetMemoryUsage() const {
+    u64 total_usage = stream_buffer_size;
+
+    // Add usage from all staging buffer caches
+    const auto& device_local_entries = device_local_cache;
+    const auto& upload_entries = upload_cache;
+    const auto& download_entries = download_cache;
+
+    for (const auto& level_entries : device_local_entries) {
+        for (const auto& entry : level_entries.entries) {
+            if (entry.buffer) {
+                // Estimate buffer size from log2 level
+                u64 buffer_size = 1ULL << entry.log2_level;
+                total_usage += buffer_size;
+            }
+        }
+    }
+
+    for (const auto& level_entries : upload_entries) {
+        for (const auto& entry : level_entries.entries) {
+            if (entry.buffer) {
+                u64 buffer_size = 1ULL << entry.log2_level;
+                total_usage += buffer_size;
+            }
+        }
+    }
+
+    for (const auto& level_entries : download_entries) {
+        for (const auto& entry : level_entries.entries) {
+            if (entry.buffer) {
+                u64 buffer_size = 1ULL << entry.log2_level;
+                total_usage += buffer_size;
+            }
+        }
+    }
+
+    return total_usage;
+}
+
 StagingBufferRef StagingBufferPool::GetStreamBuffer(size_t size) {
     if (AreRegionsActive(Region(free_iterator) + 1,
                          std::min(Region(iterator + size) + 1, NUM_SYNCS))) {
diff --git a/src/video_core/renderer_vulkan/vk_staging_buffer_pool.h b/src/video_core/renderer_vulkan/vk_staging_buffer_pool.h
index f63a20327..78111f562 100644
--- a/src/video_core/renderer_vulkan/vk_staging_buffer_pool.h
+++ b/src/video_core/renderer_vulkan/vk_staging_buffer_pool.h
@@ -42,6 +42,8 @@ public:
 
     void TickFrame();
 
+    u64 GetMemoryUsage() const;
+
 private:
     struct StreamBufferCommit {
         size_t upper_bound;
diff --git a/src/video_core/renderer_vulkan/vk_texture_cache.cpp b/src/video_core/renderer_vulkan/vk_texture_cache.cpp
index d0e873eb8..eacb05bca 100644
--- a/src/video_core/renderer_vulkan/vk_texture_cache.cpp
+++ b/src/video_core/renderer_vulkan/vk_texture_cache.cpp
@@ -7,8 +7,11 @@
 #include <vector>
 #include <boost/container/small_vector.hpp>
 
+#include "common/alignment.h"
 #include "common/bit_cast.h"
 #include "common/bit_util.h"
+#include "common/literals.h"
+#include "common/common_types.h"
 #include "common/settings.h"
 
 #include "video_core/renderer_vulkan/vk_texture_cache.h"
@@ -27,6 +30,8 @@
 #include "video_core/vulkan_common/vulkan_memory_allocator.h"
 #include "video_core/vulkan_common/vulkan_wrapper.h"
 
+using namespace Common::Literals;
+
 namespace Vulkan {
 
 using Tegra::Engines::Fermi2D;
@@ -927,7 +932,31 @@ VkBuffer TextureCacheRuntime::GetTemporaryBuffer(size_t needed_size) {
     if (buffers[level]) {
         return *buffers[level];
     }
-    const auto new_size = Common::NextPow2(needed_size);
+
+    // Optimize buffer size based on VRAM usage mode
+    size_t new_size = Common::NextPow2(needed_size);
+    const auto vram_mode = Settings::values.vram_usage_mode.GetValue();
+
+    if (vram_mode == Settings::VramUsageMode::HighEnd) {
+        // For high-end GPUs, use larger temporary buffers to reduce allocation overhead
+        // but cap them to prevent excessive VRAM usage
+        if (needed_size > 32_MiB && needed_size < 256_MiB) {
+            new_size = Common::AlignUp(needed_size, 32_MiB);
+        } else if (needed_size > 2_MiB && needed_size <= 32_MiB) {
+            new_size = Common::AlignUp(needed_size, 4_MiB);
+        }
+    } else if (vram_mode == Settings::VramUsageMode::Insane) {
+        // Insane mode: Use massive temporary buffers for RTX 4090 to maximize texture caching
+        // and shader compilation performance
+        if (needed_size > 64_MiB && needed_size < 512_MiB) {
+            new_size = Common::AlignUp(needed_size, 64_MiB);
+        } else if (needed_size > 8_MiB && needed_size <= 64_MiB) {
+            new_size = Common::AlignUp(needed_size, 16_MiB);
+        } else if (needed_size > 1_MiB && needed_size <= 8_MiB) {
+            new_size = Common::AlignUp(needed_size, 2_MiB);
+        }
+    }
+
     static constexpr VkBufferUsageFlags flags =
         VK_BUFFER_USAGE_TRANSFER_SRC_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT |
         VK_BUFFER_USAGE_UNIFORM_TEXEL_BUFFER_BIT | VK_BUFFER_USAGE_STORAGE_TEXEL_BUFFER_BIT;
@@ -945,6 +974,49 @@ VkBuffer TextureCacheRuntime::GetTemporaryBuffer(size_t needed_size) {
     return *buffers[level];
 }
 
+void TextureCacheRuntime::CleanupUnusedBuffers() {
+    // Aggressive cleanup for Insane mode to prevent VRAM leaks
+    const auto vram_mode = Settings::values.vram_usage_mode.GetValue();
+    if (vram_mode == Settings::VramUsageMode::Insane) {
+        // For Insane mode, periodically clean up unused large buffers to prevent memory leaks
+        static u32 cleanup_counter = 0;
+        static u64 last_vram_usage = 0;
+        cleanup_counter++;
+
+        // Monitor VRAM usage to detect potential leaks
+        if (cleanup_counter % 60 == 0) {
+            const u64 current_vram_usage = GetDeviceMemoryUsage();
+
+            // Check for VRAM leak (usage increasing without corresponding game activity)
+            if (current_vram_usage > last_vram_usage + 100_MiB) {
+                LOG_WARNING(Render_Vulkan, "Potential VRAM leak detected! Usage increased by {} MB",
+                           (current_vram_usage - last_vram_usage) / (1024 * 1024));
+
+                // Force aggressive cleanup
+                for (auto& buffer : buffers) {
+                    if (buffer) {
+                        buffer.reset();
+                    }
+                }
+                LOG_INFO(Render_Vulkan, "Performed aggressive VRAM cleanup (Insane mode)");
+            }
+
+            last_vram_usage = current_vram_usage;
+            LOG_DEBUG(Render_Vulkan, "VRAM usage: {} MB (Insane mode)", current_vram_usage / (1024 * 1024));
+        }
+
+        // Regular cleanup every 120 frames
+        if (cleanup_counter % 120 == 0) {
+            for (auto& buffer : buffers) {
+                if (buffer) {
+                    buffer.reset();
+                }
+            }
+            LOG_DEBUG(Render_Vulkan, "Cleaned up unused temporary buffers (Insane mode)");
+        }
+    }
+}
+
 void TextureCacheRuntime::BarrierFeedbackLoop() {
     scheduler.RequestOutsideRenderPassOperationContext();
 }
diff --git a/src/video_core/renderer_vulkan/vk_texture_cache.h b/src/video_core/renderer_vulkan/vk_texture_cache.h
index 8501ec384..21667f82c 100644
--- a/src/video_core/renderer_vulkan/vk_texture_cache.h
+++ b/src/video_core/renderer_vulkan/vk_texture_cache.h
@@ -105,6 +105,7 @@ public:
     }
 
     [[nodiscard]] VkBuffer GetTemporaryBuffer(size_t needed_size);
+    void CleanupUnusedBuffers();
 
     std::span<const VkFormat> ViewFormats(PixelFormat format) {
         return view_formats[static_cast<std::size_t>(format)];
diff --git a/src/video_core/vulkan_common/vulkan_device.cpp b/src/video_core/vulkan_common/vulkan_device.cpp
index 9e01155b1..349f82b4d 100644
--- a/src/video_core/vulkan_common/vulkan_device.cpp
+++ b/src/video_core/vulkan_common/vulkan_device.cpp
@@ -1336,13 +1336,29 @@ void Device::CollectPhysicalMemoryInfo() {
         const u64 reserve_memory = std::min<u64>(device_access_memory / 8, 1_GiB);
         device_access_memory -= reserve_memory;
 
-        if (Settings::values.vram_usage_mode.GetValue() != Settings::VramUsageMode::Aggressive) {
-            // Account for resolution scaling in memory limits
+        const auto vram_mode = Settings::values.vram_usage_mode.GetValue();
+        if (vram_mode == Settings::VramUsageMode::Conservative) {
+            // Conservative mode: Limit to 6GB + scaling memory
             const size_t normal_memory = 6_GiB;
             const size_t scaler_memory = 1_GiB * Settings::values.resolution_info.ScaleUp(1);
             device_access_memory =
                 std::min<u64>(device_access_memory, normal_memory + scaler_memory);
+        } else if (vram_mode == Settings::VramUsageMode::HighEnd) {
+            // High-End GPU mode: Use more VRAM but with smart buffer management
+            // Allow up to 12GB for RTX 4090/4080+ users, but optimize buffer allocation
+            const size_t high_end_memory = 12_GiB;
+            const size_t scaler_memory = 1_GiB * Settings::values.resolution_info.ScaleUp(1);
+            device_access_memory =
+                std::min<u64>(device_access_memory, high_end_memory + scaler_memory);
+        } else if (vram_mode == Settings::VramUsageMode::Insane) {
+            // Insane mode: Use most of RTX 4090's 24GB VRAM for maximum performance
+            // Reserve only 2GB for system and other applications
+            const size_t insane_memory = 22_GiB;
+            const size_t scaler_memory = 2_GiB * Settings::values.resolution_info.ScaleUp(1);
+            device_access_memory =
+                std::min<u64>(device_access_memory, insane_memory + scaler_memory);
         }
+        // Aggressive mode uses full available VRAM (no limits)
 
         return;
     }