has mentioned that....
'to avoid conflicts with the new windows scheduler (1903) you will have to use AGESA Combo-AM4 18.104.22.168 or newer'
in other threads....
I have to say, 1903 has reduced my latency considerably, though odd spikes of 1000+ns which didn't used to happen.
od - sorry to hear you're having problems. You can go back to 1201 if you use Afuefix64.exe (not Afugan which is for modded bioses)