High Network Latency Exist On Build but not in Editor!?

Thanks for reply, I tried the suggestions, however lag still continues and it’s even make no sense. To be honest I feel like this is not latency issue but maybe something different, because I have 14 ping.

I noticed that my bullet projectiles are not getting created on client. (server spawn a projectile and since it moves so fast it take some time to created in client, and maybe it’s destroyed before getting created. However this was not a problem before)

Second I see on dropping items, it acts very weird.