Temperature vs GPU usage (FPS)

[sisiropa]

so i have this laptop acer 4830tg for a year, mostly used for gaming. i've encountered problems due to overheating and fps drops in many games and noticed this from msi afterburner, which means i can monitor my gpu usage and temperature as well. here's the graph when i was playing SR4

at the beginning, i could play for almost 40 fps (capped) until a moment when everything turned slower.
thus, i realize that whenever my temp reach a certain degree, my gpu usage cut down almost a half also FPS as well, to maintain laptop temp at safety degree (40 fps to <20 fps). although i placed my cooling pad and cleaned my heatsink neither solved this heat problem.

Any ideas? Thank you.

P.S
sys spec:
Intel I3 2330M 2.2 ghz
NVIDIA GT 540M 1024GB
6 GB RAM DDR3
Win 7 64bit

 

[knightmike]

Lower the settings.

 

[sisiropa]

Lower the settings.

it was on low actually

 

[knightmike]

67 isn't that hot. It's strange that it throttles down but never throttles back up even after the temperature drops. If you can, turn off the throttle and see what happens.