THANK YOU VAHN!!!
I will give you my specifics then tell you what I noticed and what I heard from friends.
Everything is hardwired
NAT = Open
I am host, at least it seems, 75% of the time.
The freeze which causes my reboot is during the load of the map from lobby and sits at "Awaiting other players" or a message close to that. The only option I have is to press the PS button and quite game. Then I get the 3 beeps and reboot.
I have not noticed that if it is a common map, it doesn't seem to matter.
While it is loading...
I can hear people playing and talking but I do not know if they can hear me all the time. There have been occasions where I have had a response to my question of if they are playing.