Yeah on or off it's the same thing.Oh, I thought that was with EXPO on, didn't realise it was affecting him with it off.
Had a look at list of supported memory for the ASUS 670E TUF Gaming WiFi and the 6000mhz 40-40-40-77 XMP is not listed.
I think they may have put one in by accident that the motherboard doesn't work with.
Going by the following page the only XMP supported 6000mhz kits are 36-36-36-76. Could also be the issue.
TUF Gaming X670E-PLUS WiFi
ASUS TUF GAMING X670E-PLUS WIFI is an AMD AM5 (Ryzen™ 7000) ATX Gaming motherboard with 16 teamed power stages, PCIe® 5.0, DDR5 RAM support, four M.2 slots, USB 3.2 Gen 2x2 Type-C®, and Aura Sync RGB lighting.
www.asus.com
I'll say this in the RMA too once PCS get back to me.