We are having same issue. Sometimes it happens instantly and sometime it happens after some time. Is this a bug or sometime on our end. Here is log report
Assertion failed: !IsUnreachable() [File:D:\Build++UE4+Release-4.19+Compile\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\ScriptCore.cpp] [Line: 1189]
MotionControllerComponent /Game/Maps/UEDPIE_0_MASTER.MASTER:PersistentLevel.BP_MotionController_C_1.MotionController Function: ‘/Script/HeadMountedDisplay.MotionControllerComponent:OnMotionControllerUpdated’
THanks,