Duplicate of UE-26739
Listen server needs smoother interpolation of remote clients. Update throttling and/or low framerates on clients results in poor experience on the listen server. Might be optional for dedicated server (default on for listen, off for dedicated for perf).
UDN : https://udn.unrealengine.com/questions/159105/performmovement-for-autonomous-pawns-not-called-on.html
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-3948 in the post.