I own Dell Inspiron N4110, with i5 2450M @2.50 Ghz, 4GB Ram, Intel HD3000 shared and Radeon HD 6630M dedicated graphic card.
I'm having issue with the gaming performance. It happened when I play Dota 2, an online multiplayer game. I used to play around 2-5 hours per day and used to get smooth 60-65 fps through the entire playing time with maximum video setting. However starting around 1 month ago, the fps started to drop severely after around 40min of play to 20-25 fps, and things gotten worse that now after only 30min of playing, I ultimately got 10-20 fps which forced me to stop the game. The issue hasn't appeared in my other game, though I only have FM14, NDS and PSx emulator, and other little stuff.
When the issue happened and I closed the game, the graphic performance of windows gone too, like when you're not installing graphic driver. There's lag with windows animation and when I tried to play HD movie, it didn't play well. I have no clear idea about this but I suspect that the excessive temp has something to do with this. Because when I let my laptop cools down for 5-10min or restart it, the graphic performance went normal again although then I decided not to play the game again for a session.
I tried temp-checker software and found that during the event, the motherboard's temp is around 65-70'C. I don't know much, is that normal or bad? Also, the software was unable to check the VGA's temp probably because after I updated the driver months ago, the system (dxdiag) became unable to detect the dedicated (the radeon one) card instead showing the shared one (intel), though the driver worked and switched to the dedicated card and my laptop's whole graphic performances was that of that card all the time.
I'd appreciate if anyone can help in any way or has experience with this kind of issue. Thanks