Moving into a house for the first time since before college this year, I only just learned about Wi-Fi channel width this week. Apparently the mesh routers I ended up picking several months ago had a default width of 160 MHz, but only go as low as 80 MHz, so that's what I ended up switching to. Anecdotally it has seemed to be somewhat more reliable, but maybe in the long run finding something that can go even lower might be worth it because we do still notice some stutter occasionally that would be nice to reduce even if the theoretical max throughout was a bit lower.