What effect does watching a video at 2x speed have on watch time and retention

For quick tips on your youtube progress, we use the VidIQ plugin and keep on eye on their videos. I suggest that you subscribe too. So, the question is…

what effect does somebody watching your video at twice speed have on the stats.

Spoiler Alert

1. Youtube only records watch time as the physical time and therefore an 18 minute video will have a watch time of  9 minute.
2. As only half the watch time is given, the retention rate is also halved. 50% retention rate!

So when you watch a video at twice speed, you only see half watch time….

What happens when you watch at 1/2 speed ???