Noticed the same issue on my S19jPro+ 120T with AMLOGIC CB
Runs fine on full power but abnormal hashrate of 82-88T in Low power mode.

Switched to Xilinx CB on the same miner and everything works great. 🎉

Runs well on ePIC UMC as well.
This has to be either a problem with AMLOGIC hardware or Bitmain's AMLOGIC firmware.
Unfortunately, AMLOGIC is the predominant control board on these miners these days, so this affects a lot of people.
Hopefully bitmain can fix this with a firmware update 🤞
PS: 'The Menace' and 'The GOAT' are living up to their nicknames!
