diff --git a/src/core/gpu_hw.h b/src/core/gpu_hw.h
index f28e2df47..d19703049 100644
--- a/src/core/gpu_hw.h
+++ b/src/core/gpu_hw.h
@@ -41,13 +41,14 @@ public:
 protected:
   enum : u32
   {
-    VRAM_UPDATE_TEXTURE_BUFFER_SIZE = VRAM_WIDTH * VRAM_HEIGHT * sizeof(u32),
-    VERTEX_BUFFER_SIZE = 1 * 1024 * 1024,
-    UNIFORM_BUFFER_SIZE = 512 * 1024,
+    VRAM_UPDATE_TEXTURE_BUFFER_SIZE = 4 * 1024 * 1024,
+    VERTEX_BUFFER_SIZE = 4 * 1024 * 1024,
+    UNIFORM_BUFFER_SIZE = 2 * 1024 * 1024,
     MAX_BATCH_VERTEX_COUNTER_IDS = 65536 - 2,
     MAX_VERTICES_FOR_RECTANGLE = 6 * (((MAX_PRIMITIVE_WIDTH + (TEXTURE_PAGE_WIDTH - 1)) / TEXTURE_PAGE_WIDTH) + 1u) *
                                  (((MAX_PRIMITIVE_HEIGHT + (TEXTURE_PAGE_HEIGHT - 1)) / TEXTURE_PAGE_HEIGHT) + 1u)
   };
+  static_assert(VRAM_UPDATE_TEXTURE_BUFFER_SIZE >= VRAM_WIDTH * VRAM_HEIGHT * sizeof(u16));
 
   struct BatchVertex
   {