Graphic failure after loading game and also game interferance is too heavy for normal computers you need atlest 128mb graphic card to play game smooth
Game is fun but graphic failure all time make me unhappy i use i7 with 512 graphic card that run game easly but other lower system no way but some work should need to fix graphic failure when u go afk and stay u get error that make game stop working no error shown i try hard but nothing there so i can post here and also if u try to mimnimize game for some other work game go to crash

have fun hope this things fix in open version

You should post your DxDiag and a Screenshot of the error message (if you got any).
I am alt-tabbing out of game all the time and it's never crashing. 128mb GPUs are kinda Old School, nowadays the standard is at least 256mb for Laptops and 512mb for Desktop PCs.