Slightly OT butI find running huge amount of monitors to not work very well / even when I have crazy core count cpus.
I’m now running two pc’s side by side instead w 6 monitors total. It’s a bit more of a pain admittedly.
Also thorium runs faster than chrome or edge- try https://browserbench.org/
This thread may help since you seem focused on browser perf, snappiness, etc. https://forum.level1techs.com/t/any-total-gurus-on-machine-snappyness-extreme-general-desktop-use-browsing/