(In reply to Wayne Mery (:wsmwk) from comment #50) > (In reply to Adi from comment #49) > > slow: > > https://share.firefox.dev/3PZLCbH > > activity in nsIAbDirectory.cardForEmailAddress ? > Also, are you using the cardbook addon? Problem reproduces without it?
I owe you a beer :-) Disabling cardbook add-on has resolved my lagging message list. It's not perfect, but it's fast now. If I toggle the message pane with f8, make the window really wide, it's still laggy, but I never use Thunderbird this way, and the lag is nothing compared to the lag I had with cardbook enabled. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to thunderbird in Ubuntu. https://bugs.launchpad.net/bugs/1959747 Title: [upstream] Very high CPU and slow responsiveness in Thunderbird 91-102 Status in Mozilla Thunderbird: Confirmed Status in thunderbird package in Ubuntu: Triaged Bug description: Very high CPU and slow responsiveness in Thunderbird 91.5.0 and later. Just moving the mouse cursor over a message list results in 365% CPU for me. I had to set this in the config editor to fix it: gfx.webrender.force-disabled = TRUE Upstream bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1730423 To manage notifications about this bug go to: https://bugs.launchpad.net/thunderbird/+bug/1959747/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp