[Webkit-unassigned] [Bug 251336] New: Very slow to load and scroll the Globe and Mail website

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=251336

            Bug ID: 251336
           Summary: Very slow to load and scroll the Globe and Mail
                    website
           Product: WebKit
           Version: Other
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKitGTK
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: nekohayo at gmail.com
                CC: bugs-noreply at webkitgtk.org

Created attachment 464747

  --> https://bugs.webkit.org/attachment.cgi?id=464747&action=review

sysprof output

With Epiphany 44 "technology preview" flatpak (from GNOME Nightly) on a ThinkPad X220T (Intel Sandybridge graphics) in a Xorg/X11 GNOME session on Fedora 37, the following is noticeably slow:

1. In a new tab (or private browsing window), try loading https://www.theglobeandmail.com/ ; notice it tends to take a solid 10-20 seconds to respond and load. Firefox starts and finishes loading in less than a second.
2. When loaded, try scrolling (in my case, with the mouse wheel) to the bottom of the page. It will be slow, and in many areas, will experience choke points where the UI janks, lags, freezes temporarily, etc.

Also: reloading the page takes 14 seconds (according to my stopwatch). As you might imagine, doing the same thing in  Firefox takes only a second or less.

This was tested on a pretty fast 30 mbits connection, via wired ethernet.

Attached is a sysprof capture.

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