I've had this exact same thing with both the 6launcher and DayZ commander, and with two different routers... I first had a basic netgear router, but now I have this (it's in french, sorry, but it was provided by my internet provider and I live in France) and it's not a "crappy router", it can be used as a seedbox and I have waaaaaay more than 100 connections when I download stuff via torrents, and DayZ commander will crash my internet even with 50 connections.... There's no problems when I lower it to 5, but I don't want to wait 15hours to get a server list...