Should I try a different firmware?? 🤔
Well, if your temps are fine, voltage is good, the PSU's screws are well tightened - you have no choice but to move to the software level.
And in the other thread you mentioned something I believe it's true about bitmain doing less with the S19s power supply, what's your recommendation if am planning to leave the bitmain stuff (in the near future)
I am not the best to answer this question, as the vast majority of gears I owned were Bitmain, only the S9/S9i and S9j did me good, the 17 series was the worst for me, however, as it stands I would still recommend Whatsminer and Avalon over Bitmain, any day and every day, I have tested the M21s and they are great gears, I just got an M20s which I should set up in the next a few days and see if it performs anywhere near the M21s.