After a time playing, the cars lose the exterior of the chasis

For some reason, after a few minutes of gameplay the vehicles that I have installed (mods) will loose part of the chassis:

Whops

Just in case, this is how the car should be:

My sister says that this is kawaii

I installed a few car mods, but the one on the picture if this one.

What is the cause of this bug/glitch?

If more information is required, I have no problem on showing it.

Solution 1:

This is a common problem with High Polygon number models thanks to how memory management works in-game.

There's no solution to this problem other than reducing the Polygon count on the addon vehicle.

Source: RRRRickk and ashthenyan on Reddit