Refresh rate

Refresh rate is how often a display refreshes its image. It is measured in hertz (Hz). A fixed 60 Hz mode refreshes 60 times each second. Variable refresh rate (VRR), including adaptive modes, can change the timing of updates within a supported range. Apple’s refresh-rate guidance

BetterDisplay's choices come from modes available for the current setup. Changing Resolution, HDR or the connection can change the available rates, so a list is specific to the configuration you are using.

Display refresh rate is different from the frame rate of captured content. A 60 Hz screen can show a stream captured at fewer frames per second. Refreshing the screen more often does not create additional source frames.

See Refresh Rate for fixed and adaptive choices and the extra rate options.