Apple Notes is using significant energy on Mac M1 (Big Sur 11.5.2)

Hi there!

This is a problem with your macOS 11.5.2 installation.

You could fix this problem by:

Waiting for Apple to release an update(if the notes doesn't drain too much battery)

or

Reinstall macOS through macOS Recovery, this article will guide you through the steps, https://support.apple.com/en-in/HT204904

Regards

Aditya