Update: NanoPC T4 is a pretty good platform. The graphics aren’t quite what I had hoped. MMM-Globe (the pretty abstract one) isn’t very smooth. I did find that if the screen is in landscape mode it performs better than portrait mode. But even landscape isn’t smooth enough for my tastes. Next round of testing will be with MMM-AssistantMk2 and MMM-Hotword.
Oh, and the thing is hot to the touch. It comes with a heatsink and it’s painfully hot after a couple minutes.