The cause for my stuttering was actually this:
https://bugs.launchpad.net/indicator-multiload/+bug/1878339
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https://bugs.launchpad.net/bugs/1872796
Title:
Having the same issue on 20.04 running on AMD Ryzen 9 3900x with 32GB
RAM and Radeon RX 580, SSD drive
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https://bugs.launchpad.net/bugs/1872796
Title: