PS too slow on zoom over 250%

Hi @totoausveroia 

1. Try resetting Prefs for the Beta:
/Users/yourname/Library/Preferences/ Photoshop Beta Settings (Mac Ventura)
/Users/yourname/Library/Preferences/Adobe\ Photoshop\ \(Beta\)\ Settings (Mac)


C:\Users\user name\AppData\Roaming\Adobe\Adobe Photoshop (Beta)\Adobe Photoshop (Beta) Settings

Launch BETA Photoshop While Pressing The Keyboard Shortcut
With Photoshop closed, press and hold Shift+Ctrl+Alt (Win) / Shift+Command+Option (Mac) on your keyboard and then Launch Photoshop the way you normally would.
https://helpx.adobe.com/photoshop/using/preferences.html#Manually 

2. It may help if we could see your Photoshop beta System Info. Launch Photoshop beta, and select Help >System Info...and copy/paste the text in a reply.  

Thanks,

Cory - Photoshop Product Manager

What's your image size in pixels.

How complex is it?  (how many layers, work paths, smart objects etc.)

I have an M2 Pro MacBook Pro with 16GB and Sequoia, and I have tried painting out with a layer mask in an image 7,500 x 10,000 pixels, and I am not seeing any lag at all. I am zoomed into 1110% and the brush size almost fills the screen.   I am seeing an 8.69GB temp file in scratch space.

Is this just in the beta version?  I am using 26.6 m.3014

I am trying to think of other variables that might help track down your issue.  Can you think of any other information that might help.