magic mouse lagging

Here a few things you can try:

• Make sure that batteries in the Magic Mouse are fully charged.
• It may be possible that these batteries may be fully depleted or defective, and will need to be replaced.
• Remove, and then, re-pair the mouse to your Mac.

Ref:

• Recharge the built-in battery in your Apple keyboard, mouse, or trackpad - Apple Support
• Apple Wireless Keyboard, Mouse, and Trackpad: How to install batteries - Apple Support

If none of this helps, I suggest that you contact Apple Support directly. To do so, simply select the "Support" link on the lower left-hand side of this forum's web page.

ive recently have a lagging issue as well since the update to sonoma.. same lag issue with 2 different mouses,, extremely annoying especially when im trying to clip in photoshop

I am having the same issue as well. have you found any solutions yet?

I have not.. I’ve used 2 different magic mouse’s and both have the same issue

Same issue with magic mouse, second magic mouse, and a usb mouse. So its not the batteries