On the Epix 2, when waking from sleep mode, it seems the display updates get queued up and then all of a sudden a few updates happen at faster than 1Hz initially. It tries to catch up and writes all those updates it is behind. A few seconds later the watch updates occur at 1Hz..
See:
https://www.dropbox.com/s/f2fmvr7n8pkwhll/vid_20220919_132655.mp4?dl=0
Firmware version: 9.33