I think 52 is plenty low enough though, right? IDK. Mine is unfinished but I have a TV and all sorts of bookshelves and dressers and stuff so I try to keep mine under 60. I should take a picture of that mess sometime, lol. Anyway, I could certainly be wrong but I always thought anything under 60 was ok.
I was still getting centipedes/spiders under 60. Bought a workhorse dehumidifier (returned the one that couldn’t get under 52%) and kept it around 50. Between ortho home defense and having the humidity around 50% I haven’t seen a bug in my basement for months. Don’t need to run it in the winter, though.