How to make a game less laggy

[RMofSBI]

How to stop lag in a large part game

You will want to start by doing the basics, which are outlined in the roblox API reference: Once these are done you can get more specific with your issue, but this is a good place to start. Edit: depending on what the player is doing in the game and the map, you can look into Streaming Enabled so that parts of the map only render when player is close to them.