Windows 10 sucks forever. Unless you've messed with the stick voltages (or there's no fan on them), there's no electrical reason they'd run that poorly. Every stick is tested to 200MHz on stock before it ships, and most of 'em will do upwards of 400MHz on stock voltage if they're kept cool. That's why I put a fan header on the hubs.
Please tell me you got a fan on 'em.
Was going through this thread and noticed this post about 12V fan header on the Gekkoscience hub.

This could be pretty handy for plugging in a fan big enough to cool all the sticks on the hub. The trusty arctic breeze USB fan which was quite popular in the past, has been discontinued by the manufacturer so that's another reason for looking at non-USB options.
I don't think I've seen anyone post pictures of their cooling setup using this header. Curious about what type of fan and assembly works best with this. Top-mounted or side-mounted fan? Anyone have any pictures to share?
I might do a custom design if there aren't many good solutions with this header out there, but thought I'd check here first.