Thanks for checking Laser, it turned out to be a problem with the vorpx interpupillary distance.
I’ve done the test and had it tested with an optician at 68mm but if I go any higher than the standard 64mm setting on vorpx I get both images way out of sync. If I used the same setting on the Rift control panel however it works fine.
If people are having problems with images being out of sync (left and right not joining together) then I suggest do not use the setting ‘use oculus profile’ and keep your interpupillary setting at 64mm, give it a try.