Network freeze and instance being lost

This has happened many times already. (Something between 10 and 20 times).

The game simply freezes as if I lost connection (my network is fine as I was tracking it) and as I check the in game graph stats, it shows network info increasing the number on it.
When the number passes 100.000 or something like that, the game just closes back to the login screen as if I had being disconnected.

After that, the instance is closed and the map is lost.
My main issue with that is it happens a lot during multi-breach maps.

I don't know the exact details, but usually it happens on 3~4 breach maps. I wonder if its too much loot on the floor or something... And the disconnect always happen while the breach being done.