For those who don't follow UE4 channel there's some neat stuff in UE4 4.15
Some things that _might_ ;) be of help to DTG
Performance Improvements :)
https://www.youtube.com/watch?v=CTBL3b6JjnQ#?t=14m07s
Raw Input Plugin for joysticks and such, quite interested to see if we get any this to play with. :)
https://www.youtube.com/watch?v=CTBL3b6JjnQ#?t=32m03s