[Webkit-unassigned] [Bug 222902] New: [GTK] Very bad performance on a 4K display

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=222902

            Bug ID: 222902
           Summary: [GTK] Very bad performance on a 4K display
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKitGTK
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: berto at igalia.com
                CC: bugs-noreply at webkitgtk.org

I'm forwarding a bug originally reported by a Debian user, see here for details: https://bugs.debian.org/984498

Here's a quick summary:

- Writing text is very slow in apps that use WebKitGTK: ~300ms to have letter to appear in a mail reply and about 40% of one CPU core usage on Gen6 i7.
- Display: 4k/60hz screen running on Nvidia GTX 1660 SUPER with proprietary drivers
- This problem does not happen at lower resolutions (1366x768)
- The problem appeared suddenly around the time he upgraded to GNOME 3.38.0

The problem happens with versions 2.30.x and 2.31.90

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