I have Macbook Pro 16" and noticed that even though the refresh rate is set to 120 Hz, it is slower. I tested with a website [1], and when I tried to switch between two desktops it showed 70 Hz, which was surprising. Tried to update the version and change the preset to 60 Hz and back, did not work.
[1] https://www.testufo.com/refreshrate#background=000000&foreground=FFFFFF&digits=3
MacBook Pro 16″, macOS 13.0
Hi there Dave_2001,
We'd like to learn more to see how we can help. Have you tried using a different reference more to see if that makes a different in the refresh rate on our Apple Pro Display XDR? Learn more about how that works here: Use reference modes with your Apple display - Apple Support
Also, have you tried selecting ProMotion to see if that helps?
On 14-inch and 16-inch MacBook Pro models with Apple silicon, you can select ProMotion for an adaptive refresh rate up to 120Hz.
Have a look at this link for more information: Change the refresh rate on your MacBook Pro or Apple Pro Display XDR - Apple Support
Take care!
Screen Refresh Rate is slow on apple XDR Display(P3-1600 nits) preset.
