I'm running 3 hubs. I can run 8 on 2 hubs or 9 on 3 hubs but as soon as I add one more stick the problems start.
Check this out -
https://forums.raspberrypi.com/viewtopic.php?f=28&t=53832I finally figured it out. I'm running 16 sticks now @500Mhz on 2 hubs. Probably can even run on 1, but will need voltmeter and pod adjusting...