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  1. Qt
  2. QTBUG-79142

Maya 2020 PR109 performance degrades due to lengthy memory operations caused by Qt when using a dual-display setup on macOS.

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    Details

    • Type: Bug
    • Status: Reported
    • Priority: P2: Important
    • Resolution: Unresolved
    • Affects Version/s: 5.12.4
    • Fix Version/s: None
    • Labels:
      None
    • Environment:
      macOS Catalina Beta 9 or newer.
    • Platform/s:
      macOS

      Description

      Maya 2020 PR109 performance degrades due to lengthy memory operations caused by Qt when using a dual-display setup on macOS.
       
      For Maya 2020 PR109:

      • Single display setups running on Catalina Beta 9 or newer work well. 
      • Dual display setups on Catalina Beta 9 or newer show the issue talked about. The frames are not smooth and jitter.
      • When using the Pro Display XDR in a dual display setup the problem becomes a lot more severe and Maya is deemed unusable.
      • Both single and dual display setups on latest Mojave show the same or a simlar issue. I have not verified the callstack is the same however.
         

      • STEPS TO REPRODUCE
      1) Attach two displays to machine
      2) Launch Maya 2020 beta
      3) Create an object
      4) Use 3-button mouse to pan in viewport (middle mouse click and drag to pan)

      See attached files for callstacks.

        Attachments

        1. callstack1.txt
          3 kB
        2. callstack2.txt
          3 kB
        3. callstack3.txt
          3 kB
        4. image001.png
          image001.png
          255 kB
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            Assignee:
            Unassigned Unassigned
            Reporter:
            jsoethoudt Abraham Soethoudt
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              Dates

              Created:
              Updated:

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