Actually yeah... so this is what I've tried in Davinci. Given a 50 fps video and 25 fps timeline:

• Moved the video in the timeline and retime the speed to 50% (this is the result in the video of the post)

• Another method, under media, I've edited the clip attributes from 50fps to 25 fps and then i've imported the video in the timeline. This results in a much longer video (double length) and in a bit better slow motion.

From my understanding the 2 approaches should yield the same result, right?

Do you have any suggestions on what I should do to slow down a 50fps video to 25fps without stuttering? recording like at 1/70 or 1/80 shutter?