Resurrecting an old thread to let you know you're not alone.

No idea if this is still a problem, but I have this problem with ALL usb keyboards on a Touch Bar 2016 MBPro as well as a mid 2015 MBPro. The problem is such that if I type in a quick combination of letters, the sequence will repeat itself endlessly until I hammer on some other keys or change the form. It's just always happened. I have a Corsair K70, Logitech G810, a couple of mac keyboards (the BT one with no 10key, etc, and the USB mac chicklety keyboard from 2014 or 15).

I'm suspecting in my case it could have something to do with the utility I use Better Touch tool. It's annoying as hell, but BTT is more useful than the annoyance is annoying.