When i click play in roblox studio it starts laging sooo much and in normal roblox too.This happens only in my game.how can i fix that?
Could be because of a few reasons...
A) You've inserted a malicious free model/image/whatever from the toolbox. Oftentimes these will contain scripts to damage or hinder your game.
B) You have lots of parts in your game. Try removing any unneccesary ones.
C) Your graphics settings are too high for your device to manage.
There are loads more, but these are the 3 most likely. Hope I helped.