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ubuntu lagging and stuttering

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I've been given a desktop to use at my university that runs ubuntu 20.04.5 LTS and have been recently experiencing some pretty severe lag. It's definitely not the specs of the machine. Dual Xeon E5-2643 v3s and 64gb of DDR3 ram with a Quadro K4200. Looking at system monitor it says it only uses a fraction of the processing power available and yet stutters like anything. Some frames of OS animations taking seconds to proceed. I've tried talking to the admin on how to proceed and all he did was update the Nvidia drivers to the highest legacy drivers available. This helped some by reducing the stuttering from constant to having few second periods of fluidity. Is there any suggestions you can give to help me out. I'm not a big Linux user and have only learnt it to use some bio info programs for my PhD. Any directions you can point me in?

codlord avatar
ru flag
I recently had an issue with a PC of mine which sounds like same symptoms you have. It turned out my CPU was throttling to very low frequency due to a hardware flag. See the `cpufreq-info` and `turbostat` commands on my question - you can easily check if your CPU threads are running at their expected frequency/turbo frequency (I think 3.5 GHz / 3.7 GHz in your case): https://askubuntu.com/questions/1446577
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