I want to ask that if I need to tween a lot of parts with tween service, these tweeing items are not for VFX, they are core system, they are platforms. I should tween them in client side or server side? I am worrying that tweening a lot of part on the server will cause a big lag. It is because there are around 15x15 225 platforms part that i need to tween at the same time, if i tween on the server side, this cause a big lag.
I should tween on client or server side or have any else method?
You should almost never tween values on the server as it could create a lot of network lag for all clients and the server combined, so definitely tween on the client,
I think the easiest method is Optimizing Tweens (AMAZING developer/creator, I learnt a lot from his videos) but to simplify it, if you want to synchronize/replicate, send an event from the server to all clients to perform a tween, including all the tweeninfo through said event, and then wait the amount of time it’d take the tween to complete, and then let the server adjust the part to the goal.