I have again dropped from a game about half way in, the third time in 7 matches(if you count when the first 2 were complete on the second try 3 in 9)
I Have had a look at my router, pored over INTERNETS and tried to see if I have anything wrong.
9103 in UDP
16962 in TCP & UDP
30710 in UDP
I forward those ports to LAN Server IP address 192.168.0.10 (which is also my static ipv4 address), gonna go find someone on the steam to see if I can replicate the problem and try and identify it I guess.