Google engineer says a Windows 10 bug is slowing down taskbar

Windows 10 Jump List

A Windows 10 bug or design flaw is causing taskbar’s jump list
(right-click menu) to slow down on some computers. Windows 10
taskbar comes with a feature called ‘Jump List’, which has been
around since Windows 7 and it allows you to right-click an
app’s icon to access frequently used items.

For example, when you right-click Google Chrome or Microsoft
Edge icon pinned to the taskbar, you can find recent items you
were working on, frequently visited websites, and option to
close the browser’s window.

If you closely observe the animation of taskbar’s right-click
menu, you’ll notice that there is a delay of 200-250ms until
the menu appears.

This experience is not convenient or streamlined as you have to
wait a while for the jump lists to appear. Last year, a similar
problem was fixed whereby there was a delay of 500ms delay with
the jump list.

Windows 10 Taskbar

Unfortunately, Windows 10’s taskbar is still plagued with
performance issues and there remains a delay of 200-250ms.

“This is well beyond the ideal human interaction times and is a
constant frustration. I don’t want to wait for my computer,
especially when doing simple and repetitive actions that I know
it should be able to do roughly ten times faster,” Google
engineer Bruce Dawson noted, who observed this
behaviour on a device with 32GB of memory and 2TB SSD.

Google developer believes that the jump list should be faster
and he expects the menu to appear instantly, ideally in less
than 50ms.

Windows 10’s jump list delay happens with all programs,
including Notepad, WordPad, Chrome, Edge, and Microsoft Teams.
Dawson also discovered that the problem is not limited to the
jump list as there is also a noticeable delay when you
left-click on the clock on the taskbar.

“Thus, in the particular event that I am looking at the total
latency is 230 ms. This is fairly consistent across multiple
traces, multiple clicks on the same entry, etc,” Google dev
wrote in a Github post.

Bruce noted that there are many things the Windows team could
work on to address the performance issue with right-click on
taskbar entries.

Fortunately, the bug report has been acknowledged by Rich
Turner, Sr. Program Manager at Microsoft. According to Rich
Turner, Microsoft’s product team are currently investigating
the report and they’ll share the result of the findings soon.

If you use flagship hardware, chances are you won’t notice
taskbar performance problems, but the delay could be noticeable
on low-end hardware, especially older devices.

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