Unfortunately, I can also confirm the same thing. I have an Asus board as well, a Crosshair VIII Impact. I had Armoury Crate on auto-install from the BIOS and I also used AI Suite III to control a few things (have been using it for a long time and never had issues with it). So, I first turned off Armoury Crate auto-install, uninstalled everything ASUS related, used Armoury Crate uninstaller, AI Suite III cleaner, disabled all ASUS related services, deleted all of the ASUS folders that I can find, ran a registry cleaner, and a leftover file remover, following some online uninstallation guides. Several restarts later, this fixes nothing. I was stuck at sub 30 fps regardless of resolutions and settings before with sub 100% GPU usage (65%-ish), and I still am having the same issue after the fix.
I then tested this fix on a spare SSD I had laying around. I just installed a fresh Windows 10 on it, boot into it, install the latest driver for my 6900XT and AMD chipset driver for the X570 chipset and 5950X. I had my CBP2077 on an external drive, so, without GOG I just ran the EXE of the game as administrator on the fresh Windows 10 install, and lo' and behold, I'm getting proper 100% GPU utilization now, and the fps scales with the resolution and settings nicely.
So, it clearly is something to do with the "old" Windows install. Most likely, as others have suggested, it is somehow tied to ASUS' AI Suite III, but well, I don't know. Removing it seems to be of no effect.
One thing is for sure, there is no way in hell I am reinstalling Windows to just play a single game. This is not how it was supposed to be and is totally unacceptable for a $60 game. I also use my computer for work during workdays and there are numerous proprietary programs that will take ages to reinstall and reconfigure, not to mention to re-license them. It simply is not worth the effort for me to reinstall Windows just to play a game.
So, until it is clear what the issue actually is and how to fix it without having to reinstall Windows, I'll say that this is just a load of horse sh*t! Can't even play the game I paid retail for properly.