The 2021 MacBook Pros feature ProMotion displays. This is great for most users, but some professional environments require set frame rates.
Professional workflows may require users to disable the Adaptive ProMotion display and lock the frame rate. ProMotion on Apple devices dates back to 2017 with the second-generation iPad Pro models and, more recently, the iPhone 13 Pro. It allows the screen to be as low as 24fps and up to 120Hz buttery smooth.
The technology is a great battery saver as you can change the frame rate on the fly based on what is displayed on the screen. For example, if you are reading a long article, the screen does not need to be at 120Hz or even 60Hz. The same is true for video content. If the content is only 30 or 24 fps, the screen will play back at the lower frame rate instead of scaling at 60Hz. However, there are times when it may be necessary to lock the frame rate to a specific rate. For example, you may want to lock the frame rate at 30 or 24 frames per second when editing videos.
No dropped frames here
In general, most users will not need to change refresh rates, as most applications and content will automatically adjust based on the source. Scrolling and overall system animations will go up to a super smooth 120Hz. Realistically, manually changing the frame rate is only necessary for professional sessions where it is absolutely necessary to have a specific frame rate setting.
At the time of this writing, only 2021 MacBook Pros currently feature ProMotion displays when it comes to Mac computers. Additionally, 2017 or later iPad Pro models and the iPhone 13 Pro series also feature retrofit ProMotion displays. However, iOS devices with ProMotion displays are not as flexible as Macs and only have the option of ProMotion or 60Hz adaptive settings. Users will not be able to select other options like 48 or 50Hz on iOS. It’s also worth noting that for Macs and iPads, ProMotion refers to an adaptive update between 24Hz and 120Hz. The ProMotion display on the iPhone 13 Pro adapts between 10 Hz and 120 Hz.