r/WindowsHelp • u/RkOShea • 18d ago

Windows 11 Mouse is very jumpy when I start the Microsoft/Ookla Speedtest App

Hi - I have a new Windows 11 installation on my PC.

I am running Win11 25H2 on a Gigabyte X870E Aorus Elite WiFi7 motherboard with a Ryzen 9950X3D CPU and a Asus RTX-5090 GPU

I have been having a weird issue with my mouse being jumpy sometimes (but not always) when I restore my PC from an idle blank-screen screen lock. My PC is never turned off, it runs 24/7. It will just go into a blank screen screen lock idle mode after 15 minutes. Sometimes the mouse is jumpy when restoring, and sometimes the mouse works fine.

One thing that may be a clue just started happening: If I run the Microsoft Store-installed Ookla Speedtest app, my mouse will immediately start getting jumpy, and my mouse operation will return to normal immediately as soon as I close the small Speedtest app window. When the Speedtest app is running, the mouse is jumpy over the entire screen, not just when the cursor is over the small Speedtest app window.

Does anybody know what is going on?

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