PhoenixSpine

First off, I would like to applogize if this is posted in the wrong area, or that this topic has been covered before and that I'm being blind as usual. Okay, as I play this mod (Or any demanding game), the FPS remains at a high 60 for the a good 10-15 minuites. After that point, the FPS suddenly drops for a second, only to jump forward as if to replace the missing frames, over and over again. A quick-fix for this is to Alt-tab out of the game, wait for a moment, then resume. However, I want to know why this happens and how to fix it. My specs are as follows: CPU = AMD Phenom II X4 820 Processor Quad Core 2.8Ghz Processor RAM = 4 GB GPU = ATI Radeon HD 5670 1GB Thank you very much for reading.

Ah, thanks for the explaination. I'm planning on upgrading my RAM, but it looks as if I could do with a new rig from the sounds of things. Many thanks.

This happens to any of the recent games I have played (Just Cause 2, Saints Row The Third, Kane and Lynch 2, e.c.t)