Sion's Q make temporary small disconnects

Like in topic - Sion's Q make temporary small disconnects ("trying to recconnect" message) when playing bots game (5 vs 5) with friend in one isp address. We tested on two drifferent clean computers, two lol accounts and once i get sion, second time my friend get's sion. This Q cause this dc's for both of us (no matter who pressed q playing sion, we both in same time had small dc). In office (yeah office! at work! ;p ) we have two isp providers so we tested it firstly, but our internet connections was very good. DC was always after Q was once pressed (not Q again to unleashed skill).

On non standard custom game when we get two sions (against each others) everything works normally, also works good when only one person is in match from one ip address. Eg. i play sion match with bots and my friend also plays sion but in different bots match. We don't tested on ARAM, playing with ppl, dominion or 3 vs 3, only tested 5 vs 5.

This Q causing problem not from begining - in one match we go bot lane, when match starts and we was in half a way to our tower my friend pressed Q and everything works normally, but when we pvp with bots near minions Q causes DC again. When this occurs next Q causes problem again (we waited once 5 minutes next 10 minutes and then pressed again Q - and we get DC ...).

BTW sorry for my english.