I personally use a Remarkable 1 with yaft (1) as a terminal. I connect via ssh to a tmux session for editing and the response is fast enough.
1. https://github.com/timower/rM2-stuff/tree/master/apps/yaft
1. https://github.com/timower/rM2-stuff/tree/master/apps/yaft
Added a Dockerfile to make the build easier here: https://github.com/DaveHarrington/rM2-stuff