by Patr1ck on Thu Apr 09, 2009 4:04 am
If all your games are having the framerate problem after a few minutes, then you are having a heat problem. You may need to make sure your CPU processor's heatsink is seated properly, and that your video card's fan is working. On my older cpu, I have a Sapphire Radeon X800 XT PE, and I was getting a very low framerate and some strange graphical corruption in Half Life 2. It turned out that the fan doesn't turn on sometimes, and the heatsink probably isn't helping much. I have a small personal fan blowing at the side of the case, which keeps the system cool enough to run.
A simple way to do this is to open the side of the case, and touch the video card to see how hot it is. Then start up the game, wait till the framerate drop kicks in, then touch your videocard again to see if it is alot hotter. Once 2K9 has a low framerate, ALT+TAB out of the game for a few minutes, then go back in and see if the framerate is smoother. If it's a cooling problem, the framerate should go back up to normal, and then when you start playing it again, it will eventually drop back down.
Another possibility is a virus.