Sorry for the noise, but I hope this is helpful. Things are working perfectly with no dropouts using the DietPi image from Allo (the m1 version) with the new v2.0.0 ethernet driver. Can’t say for sure if it’s the different driver version, kernel version, or both (or neither!) that fixed things, but it’s working and I’m gonna leave it alone.
@spockfish If you need me to test anything to get this fixed in RoPieee (assuming it is actually broken and not just me being dumb), just let me know.