Server rendering lagging, but still updating

[windwalk]

I am working on an online project and we are having a problem, when 2 players are on a server, occasionally the other player will stop rendering in the right place/freeze in place but the other player will still see their health bar moving around. It seems as though the update is working fine, because the health bar follows the "frozen" player but his avatar is just stuck in place. Eventually the avatar will reattach to the player but usually only after hes stopped moving. I have minimal experience in Unreal and I was wondering what server issues could cause this.

[_Lynx]

Something the player does breaks replication from client to the server. I suggest you making a player track what he is doing at a given moment, so that you know what he is doing when replication breaks, then check the code that action invokes and see where there may be issues.