Fun with solar and Renogy MPPT 30 Li (kind of)

Responding to "demand" and then amps drop with less demand is normal while in Float. Seems like the controller thinks batt is nearly full and that is how it is acting.

With the high voltages of an LFP, maybe it is confused about the battery SOC, although it is supposed to be in LFP mode?

IMO you are doing something funny with the settings or set-up and confusing yourself (and us!)