So there was this ad on Instagram in 2018 about a movie that was filmed.
It was about a man who randomly blanks out throughout the day and can’t remember what happens in those blank moments. The scene played in the trailer shows him finishing his meal and heading towards the sink with the dishes where he freezes completely. It’s stated that he films himself to figure out what he does during the blanks in his memory.
Seemed like a horror / documentary.