I seem to have found a solution to this problem with the latest nvidia drivers 461.92, a very strange problem, but fps returns to normal after deleting the config.wtf file in the wow /retail/ wtf
However, this only works until the game is restarted, after which everything starts to hammer the video card at 99% and freeze again. Oh, our indie company.
The main thing is not to change after the first launch of the Directx version and the choice of video card.
Checked in SPIRES OF ASCENSION