I'm creating a boss where it shoots out small squares that tween towards random players, and I'm doing this on server as it has to deal damage to the player and the projectile must go to the same player for everyone (if i made the tween on the client the random player would be different for everyone)

The problem is there are quite a lot of projectiles and it begins to lag tweening them on the server, however on the client it's fine. How do I fix this?