performance issue with the game

HI
I found a problem with the game's performance, which involves a large drop in fps when turning on dynamic mirrors while rotating the camera while driving backwards and when changing the camera to the interior of the vehicle.

Ryzen 5 5600X processor

GTX 1660TI

32GB 3600MHz

 

Every mirror is another camera angle the game needs to render, which means that it is very performance intensive on your GPU and also the CPU. Whenever your camera is sufficiently far away from a mirror or the mirror is outside of the screen, the game simply skips rendering it.
Your FPS drops come from the fact that your system simply can't handle the load properly. Consider reducing the mirror resolution or disable dynamic mirrors entirely.