mine juz upgrade to 30mbps .
and then I notice 1 thing becoz I use wireless.

it will automatic disconnection for a few secs, and then reconnect back again, and it happens a few times everyday.
like 1 day - 2-3 times dc

btw I m using 3x Attenna Asus router!

all I can say is unifi sux but theres nth much we can do.