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    Slow scrolling for modal windows

    Opera for Windows
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    • winblood
      winblood last edited by

      This affects Opera 40, Opera 39 was fine. When scrolling HTML modal windows, the scrolling is jerky and uses alot of CPU with < 20 FPS. This performance issue is also present in several settings pages:

      Pages affected:
      Quick access,
      Bookmarks (seems better),
      opera://extensions/,
      Downloads,
      opera://flags/

      Pages not affected:
      News,
      Tabs,
      History,
      opera://settings/

      I would say that the rendering method was changed?

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      • leocg
        leocg Moderator Volunteer last edited by

        I've teste with Flags'page and indeed the cpu usage goes high but scrolling seems OK.

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        • winblood
          winblood last edited by

          I went back to version 39! Repaints are super fluid.

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          • winblood
            winblood last edited by

            Any plans to fix this performance issue? On my laptop, it's awful.

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            • leocg
              leocg Moderator Volunteer last edited by

              Disabling hardware acceleration makes any difference?

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              • winblood
                winblood last edited by

                Not at all. It looks like all issues are solved in Opera Developer (v41) except in the Speed Dial and scrolling in modal windows. If I activate opera://flags/#enable-gpu-rasterization in Opera Dev, then it's silky smooth, but there is rendering actifacts.

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