Strange, periodic FPS drops

[dramarlo 0]

Hey guys, i posted asking why my FPS was so low a couple weeks ago. Since then i've done a system wipe and other various things, and it's working better, but a problem i've had since i started playing 6 months or so ago is still happening, and i was wondering if anyone could shed some light on it.

Processor: Intel® Core™ i7-2670QM CPU @ 2.20GHz (8 CPUs), ~2.2GHz

Memory: 16384MB RAM

System Model: GX780/GT780/GT780DX/GT783

Graphics: NVIDIA GeForce GTX 570MBh

I can adjust my ingame settings to increase and decrease FPS. Antialiasing is set on high, and disabled/normal don't really change much performace-wise, and i don't have post processes or anything on.

So my problem is this: Every time i play, after 3-10 minutes of gameplay with smooth framerates, i get a crazy fps drop, it goes to about 13 fps or 17, something around that, and persists for about a minute/two minutes. Then it will go away for another 7-10 minutes, and repeat repeat repeat.

I instantly thought overheating, i mean it makes sense, the system works really hard, and can't keep cool so it drops performance to compensate, then when it's cool it favours performance again, but i've used MSI afterburner and the temp hovers around 70-67, which isn't THAT bad. I have a feeling my fans in my notebook are gunked up though.

any ideas?

[Infiltrates 16]

I'd say open the side of your pc and run a huge fan on it. Kinda ghetto but it prevents meltdowns and is cheaper.

[Infiltrates 16]

And clean the fans.