H5P interactive video time lag

Hi I am experiencing a trouble in H5P Interactive video:

When adding interacting question to a video, I chose "pause video" and also typed in the "display time". It looks good in EDIT page. However when I update the video, after the interactive question answered, the video came to the last slide before the question for like 0.1 second (and the audiance can see that).

The video should stop when it comes to the question and continue to the next slide when I click "continue" in the question box.

Could you please kindly advice me on that? I creatd 3 videos last Friday and they were all good but today when checking on them, the display time got messed up.

Thank you in advance!

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