Popup reading " this webpage is using significant energy. Closing it may improve the responsiveness of your Mac."

[Gingerale]

This popup shows up after Facebook has been open for awhile. It slows everything down considerably. Any ideas what I can do to resolve this issue?

 

[hg.wells]

Nope, unfortunately it’s just the website, does it with a lot of other sites. Refresh the page is probably the best thing you can do.

 

[DeltaMac]

If you want to resolve the issue, follow the recommendation in the popup!
(You have been on Facebook long enough today!)