The memory could not be written

Since SU10, I am getting this error more and more :sob:
Before SU10, I never had this issue.
It happens at random during flights (cruise or approach phase)

Specs:
I9 10900kf
32gb ddr4 ram
RTX3090
2x m2 SSD

  • Bios default settings (no XMP or overclock profiles)
  • Vanilla sim exept PMDG 737-700
  • MSFS reinstalled
  • Windows repaired to older (known working) back-up
  • memtested both ram modules - no error
  • Tried the suggestions here - no fix

I don’t know how to fix anymore.

Hope anyone can assist / advise

(edit: added info)