Spring RTS Engine

No, not always, I think it started happening with one of the spring updates during the spring (I haven't played in quite a few months now). I don't think it was the nvidia drivers since there haven't been any new ones for over a year now.

While playing a game (irregardless of mod) sometimes everything will freeze (including other windows) and after a few seconds the whole GUI will reload itself from scratch (terrain, trees, units, etc.) and the game will resume. And sometimes windows will just blackscreen and I'll have to reboot manu...