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Very slow, Hi CPU

  • Running Opera Dev 41.0.2329.0 and I like it.
    Many bugs fixed but some new ones.
    I am running Microsoft Windows 7 Professional Version 6.1.7601 Service Pack 1 Build 7601
    When I get my web mail with Squirrel Mail Version 1.4.22 from two things happen:

    1. It is egregiously slow to display the Inbox after viewing a message.
    2. It sometimes crashed with a message about displaying the right side of a panel.
      I could not capture the screen.
      This is the very first version of Opera that has had this problem. (since at least 2009)
      I just ran a test and it took 51 seconds to display about 40 messages.
      The CPU time was never less than 8 and sometimes reach 23 in Windows Task Manager.
      The exact same test with Firefox took 2 seconds to refresh the screen.

    I am also running Firefox 48.0.2 which has no problems with the web mail.

    The web mail works fine and is much faster and uses much less CPU time.

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