Splitscreen mode looks pretty messed up in standalone mode but works fine in pie? Coming from 4.9 - 4.11
I also get this error and then it crashes after a short period of time
Assertion failed: AllEnabledTickFunctions.Remove(TickFunction) == 1 [File:D:\BuildFarm\buildmachine_++UE4+Release-4.11\Engine\Source\Runtime\Engine\Private\TickTaskManager.cpp] [Line: 811]
https://answers.unrealengine/questions/397286/splitscreen-broken-in-standalone-mode.html