My Aorus z690 ultra rev1, now with BIOS F21, still sucks regarding XMP. Probably other z690 types suck too, reading about problems.
2x 32GB Vengeance DDR5 5600 sticks, tested and no problems running at default 4800 mHz
I really thought Gigabyte was reliable, after experiences with a malfunctioning 2080ti, which was repaired after 2 years.
Been discussing these XMP problems with Gigabyte support for about 6 months; still no solution. Wish i bought a MSI again, never had problems with that.