I have same problem on my macbook pro 13, 2016 with battery draining much faster, within few hours is done... I upgrade to Big Sur yesterday and right after completion the overheating began. Laptop is also very hot. Previusly I had Catalina and didn't have any issue and baterry last much more longer.
@Apple please help to get this fix
Armahrue
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution