

Then I uninstall the mod and the game returns to smoothness and stability.

When I see FPS drop, I could be pretty sure it would crash soon. When I install the mod I can enjoy signigficantly better graphics, but my hardware may become insufficient for the game anymore. This means a lot of compromises are made, mostly in a matter of graphics quality. Graphics overhaul mods for example: the game is made to be playable on supported hardware, it means: every location in the game should be playable, at any skill level, at any game state. It has to break from time to time, there must be bugs. I bet modding tools are not perfect, and the modders themselves are not professionals. It's extremely hard to make a game stable with so much modding enabled. My second favorite game is Stalker - the original games were almost unplayable because of bugs and crashes, then the latest patches made them stable, then again, after installing some mods game is fragile again and crashes often. I'm impressed how a game modded so severely by users is SO stable and hardly ever crashes.
