I'm not sure if this is either currently built in the game, or the servers are kicking me out if I reach certain latency. Let me make this clear, I live in argentina, which is in south america, and since the server merges we lost our server in brazil which means we have to deal with playing in NA. This was never an issue though, we got used to playing in the 140-260ms range, it worked out well, although for a few months now me and my teammates that are also from this region started to experiment constant DC's, wether that'd be while sitting in social or in a mission, it's not just once every few minutes, it's constant disconnections 2 to 10 minutes into the game. It came to the point where we can't play the game anymore because we can't finish a single mission.
Either the game is kicking out players for latency spikes, or the server just gave up on players outside the US. sucks after playing for 6 years