[tbb-bugs] #19362 [Applications/Tor Browser]: Linux-64 Tor Browser 6.0.1 performance is so terrible it is a security vulnerabality

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#19362: Linux-64 Tor Browser 6.0.1 performance is so terrible it is a security
vulnerabality
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 Reporter:  49ax56xr36                           |          Owner:  tbb-
     Type:  defect                               |  team
 Priority:  High                                 |         Status:  closed
Component:  Applications/Tor Browser             |      Milestone:
 Severity:  Major                                |        Version:
 Keywords:  tbb-usability, tbb-6.0-issues, tbb-  |     Resolution:
  regression                                     |  duplicate
Parent ID:                                       |  Actual Points:
 Reviewer:                                       |         Points:
                                                 |        Sponsor:
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Comment (by cypherpunks):

 Replying to [comment:5 gk]:
 > Replying to [comment:4 49ax56xr36]:
 > > Replying to [comment:3 gk]:
 > > > Maybe that's related to #19276?
 > >
 > > Yes #19276 was the problem.  Setting `gfx.xrender.enabled` = `false`
 fixed it.
 > >
 > > The regression is so bad that initially I ran 6.0.1 for less than 20
 minutes and decided not to dig into it because it implied QC disaster.
 Was not obvious that scrolling is the performance fail.
 > >
 > > Should have been mentioned up-front in the released announcement.
 >
 > We would have done that had we known about this problem. I updated the
 blog post now. Duplicating this in favor of #19276 where the discussion is
 happening.
 The link in the blog post to the ticket does not work because it has no
 `href` attribute.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19362#comment:7>
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