I never had this issue before.. well excepts if i turned on the SLI on my nvidia. So here is what ive tried. Removed one graphic Card. did not help. reinstalled win 7 with all drivers updated. did not help here is my computer spec Intel I7 ssd drives 12gb ram nvidia 660 oc 2 gb ram x 2 I think maybe its time to do the only sulution, delete the game. after all that seems to be woring dont play it, coz its unplayable for some reason. moving around in the game is just not smooth. its like some weird mouse bad smoothing mess up aim and exsperience
have the same problem since recent update. very stuttering, hard to aim (like lagging). but FPS is not that bad. Not sure why. Also the game became GPU limited instead of CPU limited before, very strange.
The same is happening here. Every time the fps drops causing the hitching/stuttering, is because the use of cpu also dropped.
SLI doesn't work in PS2 anymore - disable it (you can do it on a "per app" basis in the Nvidia control panel).
As long as you're not running at very high resolutions (4k, multi-monitor) and the cards you are using are not extremely weak, one of them would be enough. I'm running with a GTX 660 Ti, and ot's more than enough for PS2.