Why Is only one of my scratch projects really laggy, but when I'm not in the scratch project scratch is fine?

Hi looks like you have a problom

Looks like your projects are laggy.

If your projects are laggy then the 1st thing to do is to look at the code for example. if your projects contains the cloning of sprites in a forever loop and you didn't made a way to delete them, then the the project may get laggy or stamping too many sprites may make the project laggy.

And that is all i know.

If these this things don't work then you can give me the link or the URL to the project

MEANWHILE,
Go and follow me at scratch

Its better now thanks