Simple network replication lags

Hallo fellow UE4ers.

I got a simple replication for my game which is sending the transform with a reference.
and it already starts lagging after a player count of 4, I checked my internet used and it was around 400kb/s upload.
the reason why I’m replicating it this way is because the code I use needs an Impulse function which does not work on normal replication.

My replication.

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Character settings.

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My internet speed.