Hi, I am also working on an adaptaion of UE4 into a CAVE
here is my thread UE4 into CAVE - Game Development - Epic Developer Community Forums (speaking about the multi GPU capabilities…)
and here is some video,
the results are pretty amazing thanks to the UE4 renderings.
I still have to work on
- active stereo (the system is currenlty using passive stereo system)
- collision detection while navigating
- event management between UE4 visual thread