I just flash the new 1.92 BIOS for my motherboard MEG x570 Godlike from MSI with AGESA 126.96.36.199.
I don't known if it is part of AGESA or MSI in the BIOS but now I can use all my DRAM at full speed.
With BIOS 1.80 (AGESA 188.8.131.52), no way to up speed to 3600MHz on the 4 sticks, max 3533MHz.
Today, I work at 3600MHz with A-XMP enable.
If sharing this news can help.
2x G.Skill DIMM 32 Go DDR4-3600 Kit mémoire DDR4-3600 F4-3600C16D-32GTZN Trident Z