Alright quick update:
After looking into this further it is just the delay mix volume that seems to reset itself. It also seems to jump back and forth a percent or 2 on its own. The other issue is that when activating the tuner on the amp it will kick itself out sometimes instantaneously and sometimes as long as 20 seconds before getting kicked out. It is really annoying and I can't figure out why these two settings are the only ones affected as far as I can tell.
I have tried factory reseting the amp, disconnecting my FBV3 foot-controller, adjusting with and without the app, making an entirely new preset; nothing seems to help. Anyone else dealing with this issue?