Tools flickering

Welcome to the Photoshop Community. I'll help you figure this out. Please share the system info from Photoshop Help > System info > Copy and paste into a text document > Upload and attach here.

I'll move this to discussions for now. Thanks for adding the video, it helps to some extent. Are you using a stylus input or a regular mouse for input? Are there any other apps/plugins running in the background? 

Please ensure there are no stale preferences in your Photoshop. You can go to the location of the preference folder below and rename it to back it up. (https://adobe.ly/3u7u84j)

This method is more effective compared to the in-app Reset Preferences at quit method. 

macOS: Hold down the Option key in the Finder when using the Go menu. The library will appear below the current user's home directory.

Library > Preferences > Adobe Photoshop [version] Settings

Rename the Adobe Photoshop folder by adding a .old at the end. (Adobe Photoshop 2025 > Rename > Adobe Photoshop 2025.old)

This will give a fresh start to Photoshop as a new installation.

Let me know if it helps. Thanks!
Sameer K

(Type '@' and type my name to mention me when you reply)