What to Watch recency bias
The "What to Watch" feature seems to base its recommendations on what was rated most recently, rather than what was rated highest. I've only just started rating things I've seen, and I've been doing it in clumps of similar works as they occur to me, and I've noticed huge swings in what the recommendations shows. I took some screenshots of it.
And here it is after rating one work.
It's a pretty volatile system to be skewed so much by one datum. I realize this can have utility, If one enjoyed a work and want to find similar works, though it can be an issue if you're just catching up on rating things you've seen and the recommendations keep getting pulled in different directions. Maybe include an option to switch between recommending based on most recent ratings and recommending based on overall ratings.