UE 4.26 Raytrace Crashing

2080 Ti, UE 4.26 validated, Fresh studio drivers, updated win 10.

There is no error message, no crash log.

I am still getting random crashes, first UE stops responding than when I try to close it from task manager the whole computer freezes.

The only fix I found was reverting to driver version: 457.09

Any ideas?