please check out this discussion thread. https://forums.ruckuswireless.com/ruckuswireless/topics/slow-download-speeds-r710-unleashed
from my tests.... throughput suffers most with 200.7.x
seems to impact iOS devices a lot.
Going back to 200.6.x firmware it improves
rolling back to 200.4.x firmware gives you the best performance.
IT has impacted a lot of new Lennar Smart home owners that have r510s. Lot of the new owners so far I noticed sold their r510 cheap for around $110-$130 on ebay
Ruckus has only started investigating the issue. Hopefully they’ll fix it soon.