try disabling Super I/O Clock skew, in the Advanced tab i think, same pages as usb, audio settings.I have same problem, some people had succes with disabling that; I just disabled it and didn't freeze yet, but it could happen after several hours
Thanks for sharing your settings, with same RAM and your settings i have to go 1.4v on ram to boot @3466; impossible to boot @ 3600 (no big deal, i didn't try more than 1,41v anyway)@ 3466 it fails cold boot from time to time; when back in uefi @ 240...
I also heard that BCLK over 104,8 was downgrading pci-e to gen 2, and that something over 130 ==> gen1.Think it was a ryzen oc guide on YouTube, the guy concluded it was not a problem for gpu running videogames, but it could bring instability for oth...