I have a good bit of lag in my game, so I used the MicroProfiler. It says that I have a lot of ‘worker’ or something with ‘worker’ in the name The image below is what it means.
When someone joins, everyone is frozen for a few seconds, and on mobile, the FPS is very bad. I’m new to development to sadly I don’t know what “server” or “client” means.
Sounds like you might have a server script with a player joined function in it. If this script has a large calculation to do that takes ages, it could be causing lag when people join.