I use interactive video when teaching English learners. These videos contain conversations, and I pause it to ask questions about what was said. When set the interaction display time, we have a precision of seconds, but in order to pause a conversation at the right moment, there is need of 1/10 of a second. For example, set the display time to 23.4 seconds, etc.
Also, it seems that the summary display time cannot be set to zero (I have got an error). It will be usefull to allow to display the summary right at the end of the video.