Hi @jscottk, sorry for the late reply. I thought itch.io sends emails every time there's a comment. Turns out they don't :P
So I'm a bit confused here since we built and tested this using the same Rift DK2 and runtime 0.5.0.1 as you.
What was the options on the resolution dropdown that you got? We used the 1920x1080 one.