Finally figured out why the new firefox version (89) was so horribly slow (multi-second lag). Apparently it is totally incompatible with having a DPI setting in X for scaling.
Now I just have to deal with everything else being tiny...
@zhenech Yeah. Apparently it isn't all fixed, after a while it is starting to get laggy again, but not nearly as bad as it was before I took out the DPI scaling.
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