Ubuntu
thunderbird package

  1. Bug #1959747
  2. Comment #14

Comment 14 for bug 1959747

Revision history for this message
In , B-fabian (b-fabian) wrote :

I see at least two reports confirming this in Mozilla Thunderbird support, including Windows, Mac and GNU/Linux - and I have the same problem (TB 91.1.2 on Windows 10).

This makes Thunderbird slow to the point it can't be used normally.

A possible workaround was mentioned here :
https://support.mozilla.org/en-US/questions/1347196#answer-1435915

> If I go to preferences --> config editor and search for the entries:
>
> gfx.webrender.all
> gfx.webrender.force-disabled
>
> Switch the first one to false (it was already switched to false) and the second one to true (I switched this one manually)
> everything works smooths and no cpu usage jumps happen.

I suggest raising importance/severity. People upgrading seldom backup their Thunderbird profile and when this happens, all the usual "Thunderbird is slow" are being tried without a solution, bringing a user closer to stop using Thunderbird and go to other options.

A few references to people reporting this problem :

* https://support.mozilla.org/en-US/questions/1347196
* https://support.mozilla.org/en-US/questions/1351874