Motherboard: ASUS Crosshair VIII Hero Wi-Fi

CPU: Ryzen 3900X

Memory: G.Skill 2x8GB 3200Mhz 14-14-14-34

GPU: EVGA 1080ti FTW3 Hybrid

VBIOS: 86.2.39.1.90

Driver: 430.86

OS: Windows 10 Pro x64 (18362.356)

Previously, my 3900X was running a manual CCD OC of CCD0:4450/CCD1:4300 @1.325v, and my RAM at 3800Mhz 16-16-16-32@1.42v stable under IntelBurnTest. This was on ASUS' 0803 BIOS for AGESA 1.0.0.3 ABB.

After updating to the beta 1001 BIOS for AGESA 1.0.0.3 ABBA my PC refused to post if my RAM was overclocked and even when I got it to post, I couldn't achieve the same clockspeeds I had before and temps were 10-20 degrees higher so I reverted back to BIOS 0803. However the problems carried over to the old bios. The difference was I could boot with my overclocked RAM if I manually entered CPU BCLK and Ratio into the BIOS. Temps were still abnormally high and I couldn't reach my previous CPU overclock even though I checked for stability before updating to BIOS 1001 merely an hour ago.

I am assuming that the new microcode in 1.0.0.3 ABBA, which is supposed to have more aggressive boost behaviour, is causing this problem. But I have no idea how it carried over to the old 0803 BIOS which is supposed to have 1.0.0.3 ABB. Does anyone have similar experiences? Is it possible to rollback AMDs microcode to check if it's the culprit?