Version 1.12.13.0 Significant loss of performance

This is not normal and there are things you can do to make it better.

I can run in 4K with very graphics at 45 to 55 fps (photogrammetry to rural) with a 9700K + 2070S.

You might want to read this discussion, it might help you (or not):
My 2070 SUPER 4K settings and suggestions - episode 2

If you’re into VR, I’ve posted the link to my other discussions a few posts above this one.