Game gets unresponsive after playing for 10 to 30 minutes

[Mudbill]

I believe 1 GB of VRAM is the minimum system requirement for the game? Considering that, it would make sense that it'd be possible to run at the lowest settings (using the lowest requirements). Having 2 GB instead would surely allow you to use the higher settings in that regard, but if that's not an option you might have to settle with the lower ones. Can't really expect high settings on a low system.