When standing still in multiplayer if you use Network Profiler it shows we're replicating data still. It's mostly RPCs (see screenshots below) related to movement. It's possible that something in Mass logic is updating the location of the player soldier when we probably shouldn't since you're standing still (e.g. UMassForceGroundZValueProcessor or UMassSnapToNavMeshProcessor). You can use Visual Logger to confirm as those processors have VLOG calls.
When standing still in multiplayer if you use Network Profiler it shows we're replicating data still. It's mostly RPCs (see screenshots below) related to movement. It's possible that something in Mass logic is updating the location of the player soldier when we probably shouldn't since you're standing still (e.g. UMassForceGroundZValueProcessor or UMassSnapToNavMeshProcessor). You can use Visual Logger to confirm as those processors have VLOG calls.