It looks like there are a lot of people figuring out the root cause of the V3 CAM PLUS event playback issues. I did not see the OPs post until I started searching for the word stuttering.
I started a new thread regarding this same issue here: 3 out of 4 V3 CAM PLUS cameras have stuttering / freezing playback when not recording sound/audio
I’m going to cross link this thread with the one I started.
Time for WYZE to fix this issue, which others have determined started with firmware release: 4.36.10.2700 (October 18, 2022)
If we manually flash our firmware back to 4.36.9.139 (May 18, 2022), the stuttering goes away.
See this thread for more on that: Latest Firmware update for V3 causes major video stutter