OK, thanks for clarifying. I did a video using asi studio planetary, shooting a stable wall in my house the fps bounced around quite a bit, I recorded a brief video on PC and it was somewhat better than AA+ but still not entirely smooth like I would expect. I tried hi speed USB setting too and same thing.
I tried again on AA+ and it was choppy. The FPS fluctuated even more on AA+ than PC. Here’s another video a bit longer. https://share.icloud.com/photos/0f4khOAZ2wTn-9idbdrPxj8dw
I then went to focus mode and found that wasn’t working continuously as well. After a few seconds is would stutter and drop frames. Also if I’m previewing a video it’s still choppy without actually recording. Which tells me it’s the camera, AA+ or the codec or video software is having ann issue. The camera shouldn’t have too high variability in FPS, for example, shooting a white wall and keeping the camera very still, the FPS is going from 35 to 42 FPS and constantly changing. I would expect this to stay less than 1FPS variability. So maybe there is an issue with dropped frame. If the source is fluctuating like this; it seems that video speed variability is making it to the actual recorded video. Shouldn’t the record video have a 100% fixed frame-rate like 30 or 60 FPS?
I also tried an AVI on the AA+ and had the same issue, and when playing the AVI back the FPS in the top corner of the screen is fluctuating a lot. So that tells me the video codec and mode is variable, it’s not a fixed 30 or 60 FPS.
So there may be two issues occuring; the video codec/player is not playing or recording a fixed FPS, and the camera or AA+ is struggling to have stable FPS and htat’s making it worse for the codec/software on. AA+
Let me kmow if there’s anything else I can test for you.