[Trisquel-users] Trisquel lags when playing videos and video games, sometimes freezes

[uedibupi]

Recently Trisquel starts lagging when I play videos and video games.  
Sometimes Trisquel freezes completely. When Trisquel freezes, the video  
pauses but the audio loops over and over again. I have to manually restart  
the computer whenever this happens.

How can I fix this problem? Do I need to change my video card or other  
hardware? Do I need to upgrade anything?