@RasheedHolland said in V 6.6 | Slow Performance Since Upgrade?:
But doesn't the same goes for Brave and Opera? Or perhaps Vivaldi somehow interacts in a ''strange way' with Chromium which causes this problem.
Brave and Opera, to the best of my knowledge, both have native UIs rather than "embedded webapp" UIs. That said, I've never used Brave and haven't used Opera since the Presto days, so I don't know for certain.
I have never updated my GPU drivers in 25 years of computing,
I confess I find that nigh-impossible to believe. Perhaps you haven't explicitly manually done so, but these things get automatically updated with some regularity.