I came across same problem. We have characters that changes form including size of capsule which meant changing relative location of mesh so its flush with capsule. In a network game set relative location doesn’t work even if called on all clients. reason being is character movement component keeps a record of relative location at beginning and reuses value when doing movement smoothing. We solved issue by rerecording of relative location when we change it through code. If you don’t have access to code then there are 2 other solutions. 1. if relative location is constant then you can call set relative location every tick. or 2. Set Network Smoothing mode to Disabled which can be found in character movement component in blueprint. Hope that helps!
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