I always play all my games with physx turned off unless a game specifically supports it.
Im running 186.18 drivers, this game is unplayable.
I'm also really miffed as to why in the patch notes it says:
"* .58134 Fixed localVRAM detection on Vista x64 systems with 8 GB RAM and more"
Well not for me it hasn't. I'd shelved this game last week because i couldnt get a decent level of performance out of it, and the only way to get arma2 to recognise either of my 2xGTX285's was to cripple my system by limiting Windows to only use 4Gb of my 12gb ram.
The end result for me is just not worth it. I work 5 days a week as a Windows engineer for my job, and i've now spent in total more than 30 hours trying to get ArmA2 to run at an acceptable level. It won't run at more than 20fps, I've tried damn near all suggestions on this forum to get a decent performance level. Yet Crysis on the benchmark levels on the same system averages 56fps with everything maxed at 1680x1050. I really dont want to have to come home after a hard day and continually screw about with my gaming rig settings, or config files, or shortcuts to get this game working. I really wanted to, because it's been sold as a very immersive experience.
I am very jealous of you lot that get decent performance!
Sorry BIS, but thats enough from me. I'll just chalk this down to a bad purchase decision and maybe come back to it in a few months time perhaps.