First of all, my motherboard is an Asus Z790-A wifi, my cpu is an I7-13700Kf and the "G.SKILL Trident Z5 RGB Series" 32GB (2x16GB) 6400 ram kit, the exact model is this: "F5-6400J3239G16G"

As a note, said ram kit is not in the QVL of my motherboard, I am using xmp2, I have the bios updated to the latest version.

I noticed instabilities on my pc, so I started testing cpu, memory etc... and everything was fine except y-cruncher (with the script "y-cruncher skip-warnings stress VT3")

The strange thing about it is that it could go for hours without giving any failure while in another test it could fail in a few minutes, which was very strange, a person in a forum helped me and told me to set the VDD and VDDQ at 1.435V ( instead of 1.4V) and after 5 days of testing, I have not been able to reproduce the problem, so I understand that it is solved.

My question is, if this is normal, if it could be because my ram kit is not screwed, if maybe it is normal and it is only because it is not in the QVL of my board, if I should RMA etc...