To: schemer
Hello Schemer,
Thank you for the file provided. We have tested it.
Yes, there is a problem if you split video and save to mp4 container, output video is choppy. Our developers will work on the issue and try to fix it, but it will take some time. We apologize for the inconvenience caused!
However, if you split video and save it to AVI container in AVS Video ReMaker, output video will be smooth as the original. So, if it fits you, you can save video to AVI format.
Regards.