Why does wow play like crap On my PC

I got and ati 4870 1 gig with a phenom 9650 OC to 2.5. I can run crysis and fallout 3 on max settings and get 30 Fps on crysis and it destroys fallout 3. So i had to upgrade to Vista 64 after my copy of xp 64 had problems running alot of softwear plus virus scans didnt support xp 64. The fact that microsofts own virus scan and firewall didnt support it was the straw that broke the camels back. Wow ran fine on xp with 4 gigs of ram but when i went to vista my fps dropped to 18 fps from 75 i was getting on xp. So i bought 4 more gigs to fix the problem nothing happened same crappy frams what going on. I heard of a guy with to 4870's crossfired having the same problem on wow is there any way for me to fix this? When im in an instance it works fine but when im flying, in a raid , or running in a crowed city i get these frame crashes. Is there a way to fix This?

Strange, mybe you have FRAPS (or some other similar software like Xfire)and pressed "record movie" button accidentaly

No its not internet lagg only the frams drop

you got to be kidding right

Buy a new computer.BlackStalker

Buy a new computer.BlackStalker

check what your running in the background, could be something hogging your resourceReubenFTW

its ur cpu no doubt u have a slow quad core the original phenoms are slow and clock for clock get destroyed by any of intels core duo or quad cores i had a 5600+ 2.8 ghz and it was bottle necking my gpu in cpu games like l4d and tf2 especially when there where alot of people on screen at once upgrade to any phenonII processor and it will solve ur problem.johnny27

[QUOTE="johnny27"]its ur cpu no doubt u have a slow quad core the original phenoms are slow and clock for clock get destroyed by any of intels core duo or quad cores i had a 5600+ 2.8 ghz and it was bottle necking my gpu in cpu games like l4d and tf2 especially when there where alot of people on screen at once upgrade to any phenonII processor and it will solve ur problem.NitristSvensk