If you purchased the game on Steam or the Rockstar Store, you are likely running a newer version of the executable (v1.1 or newer) that breaks compatibility with modern drivers. The best way to fix this—and get the game running smoothly—is to downgrade to the original v1.0 executable and install a modern rendering wrapper.
due to compatibility issues with modern Windows versions or the game's inability to correctly detect available Video RAM (VRAM) Summary of Quick Fixes gta 3 cannot convert textures your video card hot
This is a legendary compatibility issue. GTA 3 was built for DirectX 8.0 and Windows 98/XP. It struggles to identify modern DirectX 11/12 hardware, causing the texture conversion process to fail immediately. If you purchased the game on Steam or
: Many users find that installing SilentPatch —a popular community mod that fixes numerous bugs for modern PCs—along with the DDrawComponent , completely resolves the texture conversion error. GTA 3 was built for DirectX 8