Extremely bad performance with 4.14.1 and Oculus

What happens if you disable the realtime preview in your preview window before starting it? (curious :wink:
Also by blank scene do you mean a blank project?

The fact that it is slate using the time makes me think something is going on in your project?

I do not have this issue.
4.14.1 forked from git, this is what it should look like: