[wp-trac] [WordPress Trac] #55008: WordPress Admin slow since update to 5.9.

[WordPress Trac]

#55008: WordPress Admin slow since update to 5.9.
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 Reporter:  markhowellsmead  |      Owner:  (none)
     Type:  defect (bug)     |     Status:  new
 Priority:  normal           |  Milestone:  Awaiting Review
Component:  General          |    Version:  5.9
 Severity:  normal           |   Keywords:
  Focuses:  performance      |
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 The admin area is markedly slower than before the update from 5.8 to 5.9.
 This is noticeable with and without any plugins active. The problem
 doesn't appear to be on the same screen all the time. We have also been
 warned by the hosting company that the load on one of the sites has
 suddenly increased; also occurring at irregular times. (See screenshot as
 an example.)

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Ticket URL: <https://core.trac.wordpress.org/ticket/55008>
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