Yes it should run fine on DX11,you may want to wait for a patch,it may fix it
As for Aero,i have seen some users having problem running games and sometimes disabling the Aero has helped.
Arma II is good but its not good optimized,(i tested it only 5970 and got about 20-30 FPS only), i did a search and it seems many users have FPS problems with it
I have not had a problem with any game thus far running out of the box except for singularity..
the game looks good, but doesnt look AMAZINg though..
regarding arma 2, it looks really cool..like a realistic war sim..but i was surprised with a 5970 4 gig version that despite getting 40-50 fps on average it fluctuates a lot!
someone on these boards mentioned that the first game, while fun, was plagued with bugs the prevented it from being fully enjoyable..
even high end rigs had issues running the first one because it was just poorly written I guess..
im going to try and run metro 2033 and singularity w aero disabled..see what happens..
I cant figure out what else it could be..
ive got only a few apps in the background, 12 gigs of ram..
I thought it was my firewall doing something but I use a router no sw firewall..
What settings did your friend use and what was the resolution ? because Metro isn't very well optimized.
With a 5970 and DX11 enabled(with other settings maxed out),and on 1920x1200 resolution i manage to get 20-30 FPS, but as soon as i disable DX11 and its feature, my FPS goes to 50-60(I also did a search and found many users with the same results)
might you guys know why my metro all of a sudden crashes on the 4a logo screen? Ive tried all that I can think of, reinstlling, clearing cache, doing a clean driver install..
the game was running GREAT..with full settings, with my 4 gig 5970, 50 fps ..
then one day, nothing..
I know this game has caused problems across the board due to the fact thats its a hog..kinda like crysis was..