Numerous 14 and 16-inch MacBook Pro owners with a machine with ProMotion support are saying that they are seeing smoother Safari scrolling and performance since installing the macOS 12.2 beta.
After upgrading, multiple MacRumors forum members have reported that ProMotion is functional, saying it has improved the Safari experience on their machines.
mini-LED MacBook Pro owners have complained about Safari scrolling and the lack of ProMotion support. ProMotion has been working in some apps on the Mac, but not others. Safari is one of the apps where ProMotion was not working properly.
MacBook Pro owners will be able to get a smoother, more fluid Safari scrolling experience when upgrading to macOS Monterey 12.2. The update is available to developers at the current time, and a public beta is expected to be released soon.