The problem with the Avast Clean up,

The startup of this program is stopping my PC to go into sleep mode, problem I decided. I removed it from the startup. But I have a question if your cleaner has constant monitoring of the system, whether the option to speed up (pause programs running in the background) will be effective.
I have a really ancient Windows Vista OS, but the developers must take into account such nuances as the standby mode. Thanks.

Go to settings, components and remove the Cleanup component.