If you haven't needed to use the realtek wifi tree in previous version i think the above device tree should be fine.
OK, I cloned the SD card to a 32GB UHS-1 one (in USB4, using an adapter) and everything seems fine so far and all those previously mentioned issues went away. Load is hanging around 1.4 with 1080p playback over NFS, seems all good. And yes, it's a 100M Ethernet model with Realtek (8189es) WLAN. Both worked fine out of the box.
Any ideas regarding the reset / boot to recovery for this box as holding the switch behind the AV port while powering on seems to do nothing?
Thanks