I don't think it's related to multi monitor setup.
I see wingpanel consume 100% cpu at times as well and i'm just working with my laptop-screen. Didn't have that problem on freya.
Do you guys have Dropbox installed? Maybe it's somehow related to non-standard indicators?! My battery-indicator is setup to show percentage maybe there's an issue?
I don't think it's related to multi monitor setup.
I see wingpanel consume 100% cpu at times as well and i'm just working with my laptop-screen. Didn't have that problem on freya.
Do you guys have Dropbox installed? Maybe it's somehow related to non-standard indicators?! My battery-indicator is setup to show percentage maybe there's an issue?