Believe or not, I have very similar problem, my game crashes every time.I've managed to solve the problem with the Createbuffer issue somehow(through changing some graphic option to low), but I still encounter crashing problem...i've tried to use =maxmem xxx command too, nothing...so I sended an e-mail to official suppport, and the've just responded with thing like "sorry for the problem, here's a free coupon for SprocketIdea), but you can try to contact them too.Just send three files: DxDiag.txt - ArmA.rpt - ArmA.bidmp and a description of your problem, maybe they could help you better than me...i made a topic in czech section on this forum, to solve those problems, but only solution they gave me was that =maxmem xxx command, so I'm really p****d off.
I apologize I'm not able to fully help you
and sorry for my English...