Confirmed this is happening to me as well.
Game freezes.
Full network loss, everything disconnects and my NIC status changes to "connection issues"
I have to basically restart the PC to get back online.
6v6 is fine.
I still prefer the 4 lanes.
Right now, the new map feels to big, the gaps between the lanes are just a maze that no one can find their way through easily.
no one seems to really be interested in doing jungle as the lanes are just so far apart and you cant duck off and do a camp quickly.