Config/DefaultEngine.ini

[SystemSettings]
Net.IsPushModelEnabled=1 ; Required for more efficient properties replication on the server.
p.NetUsePackedMovementRPCs=1 ; Required for view network smoothing on the listen server.
a.URO.DisableInterpolation=1 ; If interpolation is enabled, the character may jitter during rotation and foot locking will not be able to work properly.

[/Script/Engine.PhysicsSettings]
bTickPhysicsAsync=False ; If enabled, the character may fall through the ground when landing while the ragdoll is active.