There are two major issues for the 120hz ProMotion on the new Macbook pro.
- Safari scrolling of 120hz is not supported.
- Scrolling with inertia only triggers a 60hz scrolling event instead of 120hz.
I'm using the latest MacOS 12.01 on the Macbook Pro 16-inch 2021. The first issue will impact the smooth scrolling of Safari, and the second issue will affect the scrolling experience like Chrome if using trackpad as the inertia scrolling is only 60hz.
Please fix the issue first! At least give users option to choose if you are concerning about battery life and you can optimise later.
Thanks!