Optimization of Humanoid movement vs. a Custom Solution?

I am under the impression that Humanoid movement happens locally, and the server will occasionally update/correct Humanoid position to limit network traffic.

I am currently using a very basic movement solution that sets CFrame followed by a Wait in a Script. If I have many of these custom Scripts in the Workspace at once (upwards of 200+), will I reach network bottlenecks, or does the client automatically handle this? Would you recommend I have smooth, constant motion on clients and occasionally synchronize from the server?

Thanks, let me know if you need more info