Supported does NOT equal usability.
What I said still stands. Most of the player base do not have 2k/4k monitors or need to run the game above 60FPS. Simple as that. I ever said anything against what the game was capable of. But hardware limitations still apply.
So… Stop being elitist minded.
Windows 11 seems to manage single threaded games across CPU cores a little better then Win10! Which I have now converted to just for D3 stability purposes.
It may or may not work for you, but with my AMD and Intel setups, my tweak suggestion helps tremendously with D3 stability @1k or 2k.
This game can barely hold 60FPS on godlike setups in 4 player meta runs with 200 mobs on the screen, and it might be beyond our control, some players think the FPS and stuttering lag is network related.
The minimal subtle changes we can make on our end seem to help me and my clanmates, take it or leave it, only trying to help.
The best comment in the internet. Thank you 
Did those tweaks work for you?
There is little info about this on the Internet, but those changes increase performance dramatically for me throughout the years and I thought I would spread my findings.
overclockng your cpu is not supported and your cpu is running 1.3 ghz above factory clock. big question is what your gpu is. mine is an rtx 2080 ti. it curious however that it runs on core 8. it would make more sense that it ran on core 0. the 12 threads is numbered from 0 to 11. you could theoritically tell the game to run on a specific core not used by other tasks.