Performance Optimizer

I have a couple of questions about using Performance Optimizer to speed up your computer. I couldn't find any answers so I would appreciate it if someone could help me.

When you put an app to "sleep" it says it stops all scheduled tasks. Does that mean if I have a backup program scheduled to back up certain files once a week and I put the app to sleep, it will no longer perform the backup?

If you put an app to sleep and then use i during the day, does it go back to sleep after you close the app when you are done?

Thanks for any help.