I have Steam installed along with CS:GO, HL2, and Payday 2, and this happens in all of the games: when I start a game, the game seems to run fine at over 60 FPS. Then, the game starts to stutter, to the point where there are severe FPS drops (2 FPS).

I am running a Core i5-2520M (dual-core hyper-threaded) with HD 3000 graphics. In Windows, I get lower FPS (30+) on my games, but I have never seen frame drops like the ones I'm getting on Ubuntu. In fact, everything always ran smoothly. I don't know whether this is an issue with the drivers, or it's an issue with thermals.

The Additional Drivers tab shows:

no additional drivers available

The output of top shows:

Output of top

What can be done to fix this?

  • 1
    If this is on a laptop, you may be right that you may have issues with thermals. What version of Ubuntu are you sporting?
    – G Trawo
    Jul 8, 2018 at 22:03
  • It's Ubuntu 18.04.
    – john bob
    Jul 8, 2018 at 23:00
  • Do the frame rates return to the higher ones after turning the game off and starting it right away? If not, if you were to turn off the game, wait 5 minutes and start it again, would it it return to the higher frame rates? Or does it take a full reboot to return to high rates?
    – G Trawo
    Jul 9, 2018 at 1:13
  • Also, check and see what your memory usage is with 'top' or 'htop' during game play. Since you are using the Intel Graphics you would be using system memory, since there is no dedicated memory for the GPU. Depending on your configuration, that memory can be dynamically allocated. 'grep -i memory /var/log/Xorg.0.log' might show what it's set at.
    – G Trawo
    Jul 9, 2018 at 1:22
  • My framerates reset right after starting a new game. I updated my post to include the results in 'top'
    – john bob
    Jul 10, 2018 at 1:17


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