I just passed 20,000 entries, mostly movies and some TV shows. Database still runs really smooth off my nvme drive.
I create a lot of my own genres for tracking purposes, ie 4K, Zombies, Post-Apocalyptic, Sword & Sorcery etc.
I have been using for a while, maybe 2010 or before, I previously wrote my own DB but was hard to keep up with imdb changes so appreciate someone dealing with that for me.
Great product, couldn't recommend enough.