: This is the most effective "fix" for invisible cars. Use external tools such as the NVIDIA Control Panel , AMD Radeon Settings , or RTSS (RivaTuner Statistics Server) to set a global or application-specific frame rate limit of 60 FPS.

: Cars (including police) exist physically but their 3D models fail to render or spawn correctly.

. This bug occurs because the game's AI and traffic logic are tied to frame rates rather than a fixed time interval; when the FPS exceeds 60 or 90, the calculations desync, leading to invisible vehicles and erratic lane changes.

Here’s a concise, structured paper-style analysis for fixing the bug in Test Drive Unlimited (TDU). This issue occurs when police vehicles appear without visible 3D models (only lights or siren), breaking chase events.

Verdict