OK, i’ve been taking a look at the Multires branch. If anyone else is interested you need to enable multires in your project settings, then in the game console you can type vr.multiresrendering 0, 1 or 2 - the number indicates the ‘aggressiveness’ of the multires setting.
I’ve only had a short try but it doesn’t seem to have a huge effect on my game - I’ve been running the oculus forward rendering build up to now and it works a lot better for me despite the shortcomings. I can set my screen percentage to 250 using the forward renderer which gives me a really high quality, sharp distance rendering - which my game benefits from. I’d like to see what it’s like to combine these technologies - if anyone’s had any success merging these two 4.11.x branches let me know!