If someone from Iron Galaxy is reading this, instead of just fixing the above 60 fps / above 60hz speed up issue by capping the games framerate internally... actually try and get the game rate to interpolate visually up to higher resfresh rates... while the game logic and online representation remains in sync @ 60.
That way, you can have a game that looks smooth, takes advantage of different hardware configs (nice high framerate monitors) as well as is cross platform and competitive compatible.
I am not sure how this is possible, but given the otherwise immpeccable quality of the win 10 port of KI, the fact that the game is internally running @ 90 fps somehow, I imagine you guys could think up something cool.
IMO, pass the idea of supporting high framerate displays onto an engineer who knows aobut these things, perhaps he or she could think of something that does not break the even playing field.