Server Lag on Game with ~50 players on it

I’m having lag and FPS issues on my game when around ~50 players are on it. I’m not sure what is causing it and I can’t really tell from the microprofiler. I’ve taken an recording of the server and I see a script that’s under replicator process packets that’s taking 32 ms.
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Is this cause due to replication issues such as firing an event too many times? I’m not sure as there isn’t really a lot of official documentation on the microprofiler.

Check this response here for looking at script activity: