Well, it looks like my Surface Pro 3 - which worked when I tried it with Amplitube 5 a couple of months ago - has decided it is dying, and so needs to be replaced. (Lots of crackles and pops, which I assume is a buffer-size issue, and EVERYTHING I run on it is running snail-like.)
I'll reset W10 on it and reinstall Amplitube 5, but in the meantime, I'll be looking around for a new machine for using on the road (i.e. at church, a couple of times a week, so not EXACTLY at a punk club getting spewed on regularly Any suggestions from anyone using a tablet/laptop/whatever?
My wife does tablet/laptop mounting to wheelchairs and floorstands and so on as part of her job, so I'm not worried about that part, just a machine with enough grunt to run the software and hook up to the Stomp IO.