Anders Kvist: I took my sweet time with it and it appears to be working, the game didn't crash on me, even during a long session.
Would you mind telling what you changed besides TextureMemory and ModelMemory (these are the ones I noticed you changed)?
Thank you very much for providing help.
EDIT:
It just crashed on me again. I give up. GOG, you're welcome to step in and fix it properly ;)
Cheers!
Sorry to hear that. The crashes happen to me sometimes. And for the change
1. Enable preload all
2. Use direct x 9 ( not able to play at all with dx10)
3. Ingame setting i set shadow quality to medium
4. Use windowed fullscreen
Hope this will help but can't guarantee crash free and avoid zooming in at max level