[Problem/Bug]: User interface is extremely slow, power usage VERY HIGH, cpu 100%

[mailinglists35]

What happened?

Microsoft Edge user interface is terribly slow. the page itself is fine (I can scroll, interact, no lag). See attached screen recording. Whenever I interact with Edge User Interface (hover mouse over tabs, switch tabs, scroll tab bar), the parent edge process goes 100% high cpu both in internal task manager and in windows task manager is reported with power usage VERY HIGH

Please forward my issue to Edge developers. I reported using Help and Feedback but the network interface monitoring tools did not report the uploading of attached screen recording, so I believe the wizard has not uploaded it. Also I cannot send feedback using OS feedback app.

2024-09-04_16-58-5201.mp4

Importance

Moderate. My app's user experience is affected, but still usable.

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

128.0.2739.63

SDK Version

don't know

Framework

Other

Operating System

Windows 10

OS Version

10.0.19045.4780

Repro steps

I don't know.

Repros in Edge Browser

Yes, issue can be reproduced in the corresponding Edge version

Regression

Don't know

Last working version (if regression)

No response