Yeah, your system is good, try Vulkan and if it doesn't help, try rolling to an older GPU driver (use DDU to uninstall drivers first https://www.wagnardsoft.com/ ), i've read some reports of people having thier performance seriously hurt by latest drivers.

And you are using two monitors too, try not to run anything on your second one, maybe it's the same problem that was happening to me. But again, vulkan fixed it.

edit: new driver 461.72 was released feb 25th, maybe it fixed those driver problems.
https://www.nvidia.com/Download/Find.aspx?lang=en-us