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My laptop starts to lag after 10 minutes.

uliX

Estimable
Aug 2, 2015
6
0
4,510
Hello!
After a year of playing games on my laptop Insprion 17 5000 series (Dell) everything was working fine but about a month a go a laptop got a problem. After playing any game for about 10 minutes the game starts to lag insanely(from 120FPS to 30FPS on CS GO) but when I sign out and sign in everything is working fine but than again... I try cleaning laptop, scaning for virus, I even buy a cooler but nothing works. I also noticed that a laptop is working fine(with no lags) if I turn off my internet connection so I think it's a software problem.

Sorry for my bad English.

Thank you for an answer.
 
I have all the latest drivers but I don't think it's lagging because of the ping because even if I am playing the offline game it starts to lag just as long as I have the connection turn on.
 
The temperature of my cpu while gaming is around 70°C (Intel core i7-4510U 2.00GHz), the temperature of my gpu while gaming is around 60°C(GeForce 840M).
 
Have you checked the voltages and if it is using the max performance profile instead of the battery saving? Also you are sure that it is using the dgpu rather than the igpu?