I was bored so I updated. Basically one difference noted, IOD voltage.
Cheated and loaded my fast CL14 profile I have been using. Ran a few benchmarks (within run variance). Did a quick stability test everything seems the same with limited testing.
IOD voltage did drop slightly, this was also reported on another forum in regards to MSI. This could be an AGESA thing? I have not tried to increase but it I loaded the same profile as seen in first screenshots, all settings are the same but results/reading different IOD.
Has the FCLK hole at 1900 been fixed? I haven't paid too much attention since BIOS 3204.
Unfortunately this seems to be an IMC issue not FW, I am running 1900 fclk but anything over has WHEA errors.
On a side note I did try my 2000 fclk profile and of course still WHEA, but I decided to put back to 3800 with same voltage settings. I managed to post Pure 1T at 3800 CL16 but it was not stable, even bios locked up. Gives me something else to play with though. This is the first time I ever posted 1TP and assume it was one or more of the high voltage settings for the 2000 fclk profile.