bool bSimulatedNeedsSmoothing
True when this RootMotionSource is running on a SimulatedProxy and has marked itself as needing location/rotation smoothing. This smoothing logic is what runs whenever the SimulatedProxy receives a replication update from the server (SimulatedTick in CharacterMovementComponent, see bCorrectedToServer and SmoothCorrection), this flag allows the RootMotionSource to signal to the CMC that a change was done significant enough that needs smoothing.