i just managed to get my linux arm build of vcvrack running on an old and slow amazon fire 7 tablet from 2015 on which i’m running a linux system instead of the usual android … it runs stable without hickups with smaller patches (at a sample rate of 22.05khz) - the internal speaker is not supported so the output is via usb audio adapter - the touch screen is working, but as it is quite tiny (7 inch only) and vcvrack is not too well useable with a touch screen i’m using it with a usb keyboard and mouse … of course this setup is nothing one wants to use for real stuff, but i was surprised that it was possible to get it working with such low end hardware at all … for me it was just some kind of a proof of concept, that those old tablets are sometimes still useable for some things thanks to open sourse software 
there is another proof of concept i’m currently working on and which looks quite promising so far and that is to run open-stage-control on this tablet and this way converting it into a cheap and very flexible osc controller instead of throwing it into the e-waste bin soon … the idea is to connect it via a regular usb cable and use usb networking to make it availabe as osc controller on a regular computer running for instance vcvrack with its wonderful oscelot module … i’ll keep you updated once i have something enduser ready working
best wishes - hexdump