I may have used the word stuttering a bit loosely. Mostly what I get are brief skips and jumps, usually it seems, when something important happens. 
What @FakePalindrome experienced in this video would be the extreme example.
This below was actually copied straight from their website, but I have not seen them support, deny or elaborate upon it in the forum.
About all I could say is to agree with you and @Customer that it certainly seems to makes sense to produce only one video stream at a time.
At one location, where our hotspot goes offline more that it should, the continuous recordings don’t seem to be much better or worse that when the cam is actively streaming. Which is why I began focusing more on the cards. Luckily I never purchased any of the Wyze branded cards. 