@iElessar Jo, sorry for late response !
there is a new bios update for youre system.
https://rog.asus.com/nl/motherboards/rog-maximus/rog-maximus-z790-extreme-model/helpdesk_bios/DONT FORGET:
“Before BIOS update, please download Intel ME update tool from ASUS support site, and update ME firmware to Version 16.1.25.2124 to ensure optimized system settings.”
Update youre firmware and then bios, now do a clearcmos .
Test youre game, if there is still a problem , read below.
Youre memory seems to be supported , i see you got a 2 sets of 2x16gb CMT32GX5M2X6200C36
Did ya try to use only memory modules in bank A2 and B2 , so ya got 32gb installed ?
Test game with only 2 memory modules installed.
I did read ya got issues if ya XMP the memory.
Its possible 1 of the memory modules if faulty/broken
If test with 2 memory modules is till an issue , then test each memory apart from each other.
Use only 1 memory module each time and test game.
Update us please !