Maybe @Shamino could share if all these stability problems come from AGESA or just ASUS BIOS? It's unaceptable that these problems are still not resolved after all these months since release. I do get that ASUS BIOS dev team might be understaffed or ...
I have the same memory and mobo than you. Experienced same problems and @SkyBeam's explanation is correct. Have tried Buildzoid's memory and voltage settings? This is the video just in case you haven't: Easy memory timings for Hynix DDR5 with Ryzen 7...
That happened to me and it was due to the file being read from an NTFS partition. I dropped the same file into a FAT32 formatted USB and it worked fine.