Graphics problem with 9800 GTX+/9800 GT on EP45-UD3P

[KinkiKowBoi]

So I've been trying to solve this problem for the week or so. Nothing worked so now I'm asking you guys for help. Here is what happens, when I play Heroes of Newerth, the game skips frames whenever I'm walking, whether I have 60 fps or 125 fps. Sometimes, the screen freezes and the audio stutters between 5-10 seconds ever 20 minutes or so (it hasn't happened in a while so I don't know if I still have it). I fold on my 9800 GT in the background but I doubt it does anything to the gameplay because when I stopped folding, the game stutters still occur. My nvidia control panel settings are all reset to stock settings. I oc'ed my 9800 GTX+ but it's been stable under 24 hours of GPUTOOL stress test. My CPU is also OC'ed but is stable under 50 linpack tests and 12 hours of prime. I don't know if those have to deal with the problem at hand but I'm still throwing it out nonetheless. Even at stock settings on the GTX+, the game still stutters. I'm currently using 196.21 driver of nvidia for this card. Temps stay below 50 under load. Ram is at 70% use underload. Let me know if you need any more information.

Other things I have done:

Installed 191, 195 drivers
Underclocked my gpu
Turned off/on vsync
Set all settings to lowest and resolution to lowest usuable setting
reformatted computer
updated audio, lan drivers

Sorry if this is in the wrong forum, if it is, then can a mod move it? Thanks!