Windows 7: Troubleshooting poor system performance

Hello,

I don't know what i am doing wrong, or if my VGA is faulty, but i am getting below average results from most tests i perform.

For instance, Oblivion (a 2008 game that ran fine in my GTX 295 with HD Mods) is struggling to run. Maybe struggling is an exaggeration, but its running at 30 - 40 FPS and stuttering a lot.

And thats not all, vanilla skyrim with the high resolution textures seems to be running at 60 fps but there are all sorts of frame skipping on some areas.


Is there any way i can troubleshoot whats wrong or what settings are off so my VGA can perform as well as it should ( like in the benchmarks? )

Thanks,
Alex

Fixed the problem.
Turns out the latest nVidia drivers have updated the vsync functionality to integrate not only in OpenGL but also in D3D. Also they updated vsync to work that if your computer can't hold 60 FPS steady, it will drop to a 30 cap vsync. My skyrim was always in between 55 so it kept switching between those two.

As for oblivion, i believe that uhh i have no idea. Its fixed, so i dont even care!
Maybe because its old it doesnt support the new vsync very well? no clue.