Thank you Alexander Devaykin.
So, nowadays RTX is a bad thing if you are planning to make 4k works, at least until the problem fixer release.
With all my respect to all the Enscape personel, I know they are working hard, and they are so nice. But I wonder did not nobody try to get a 4k render before the release of "major" RTX support of Enscape?
I admire ENSCAPE and its capabilities. Probably I will never use another render engine. Thats why (as beloved Demian Gutberlet knows (thank you again i am so happy wih the system you adviced i even set a new system for it.