Ugh. Okay, I've pretty much completed my testing of the chrome extensions I run and how they affected my browser's performance via Speedometer3. Narrowed down the major offenders. Sadly, TWO of the perf hogs are extensions I consider mandatory - #Bitwarden and #uBlockOrigin. Those two alone take the score from >15 down to ~13. Everything else besides those listed below have negligible impact.
π Tampermonkey
π Form History Control
π Emoji for Google Chrome (extinct anyway, but ...1/4