I find my video was staggered and not as smoothly recorded as usual. I was using micro sd card with extreme pro. I wonder what was the problem. Even I lower down recording from 4k to 2.7k it does not help.

Hi Frank, our apologies for the inconvenience. Kindly back up your files and reformat your SD card and check if the issue is still the same. If it is convenient for you, kindly provide a short video showing the issue so that I can check it on my end. You can upload it by using google -drive or Dropbox and provide the link here. Thanks for your support.

Make sure your frame rate is not too fast too

Frame rate/motion blur/slow memory card? Link to a video so we can see.