You no longer have to enable the vsync in game to unlock the fps. Disable it in both control panel and in game.
AND, you can now move the fps slider to 144 (maybe more, but that's my screens max).
If you use Gsync or Freesync screen, make sure to lock the fps 2 fps below your screen. In my case, i lock it at 142 since i use a 144 screen.
Ultra low latency settings in control panel, 142 fps flat, and highest settings in game (except shadows) and control panel and i have 142 fps flat with VERY steady frametimes. Still haven't tested all maps.Fucking glorious!
9900k-32GB 3600 ram-2080Ti-2560x1440p 144hz
The error in local.ini is still there though, but i am convinced it doesn't do anything.
And as far as MIPS goes. If you have 8GB or more of VRAM (the ram on your graphics card), MIPS should be disabled (unticked). But seeing how bugged this game, try both. Nothing in this game makes sense.
If you have an AMD cpu, you should not use physical cores only. Other way around for Intel (you should tick physical cores only on Intel). But process lasso is better. Assign cores 2,4,6,8 and 10 loads my cores more evenly.