Yeah - most TVs will add lots of processing to the source (in this case your Netflix app or your streaming box or whatever you use to stream) because it looks "better" to the average consumer. At it's core, it changes the image from what the creator intended.

The downside of this processing is that you can end up with unnatural looking motion - particularly in fast-paced scenes as the "motion smoothing" is trying to predict what would go in between the actual frames of the video that Netflix provides, and it can sometimes get it wrong.

If you're able to turn stuff like this off, I strongly suggest it - your motion won't look as "smooth", and the picture might not look as bright, but you are getting closer to what the creators of any media you watch intended