For anyone else who stumbles upon this thread,
Hours of troubleshooting (after experiencing the lockup bug again post-ground fix on the PV array)
*Facepalm* I had epever send me the charge logic schematics and tuned my settings accordingly. I had float charge set to the same voltage as boost charge. What was odd is the controller accepted these values without error.
Setting boost charge to 13.8V at 180mins max duration, equalize duration to 0 with a voltage above boost, boost reconnect voltage to 13.6V, and float voltage to 13.7V, it's finally working right.
The boost charge is a curve down from max current until 180mins is reached, then it will fall to float at 13.7V with a small current (possible lockup state experienced) setting boost reconnect to 13.6V reengages the peak boost current tapering slowly until 180mins is reached again. Any load on the system at 13.7V reengages boost by dropping to 13.6V, will it will sit at 13.8V 30amps (~439 watts) for another 180mins.
This way I get to top off the battery, and instead of starting another drain/recharge cycle it's constantly reengaging boost in the peak curve powering the loads almost entirely on solar.
A bit like how modern phone battery BMS's work through USB-C bypass, also called "idle" charging.