I have quite some issue with MiniJV880 and an audio-hat from Raspiaudio, but for some odd reason not with the official Iqaudio+/raspberry dac+ audio hat:

Tried them both on rPI4 as well as rPI5. Minidexed works always, but miniJV880 shows garbled characters when using the Raspiaudio hat (but always works with the iqAudio dac+).

Any hints on what to try?