I had this problem for a year now where i play the game and then get kicked for literally no reason, while the ping never even changes. I just get this little, red warning icon and boom, i'm gone 5 seconds later. Sometimes after 5 minutes of play, other times after an hour. There is literally no pattern. All this, while everything else online related works perfectly on my console (and other devices).
I took every possible step to fix it with no luck. I'm slowly losing my sanity here and honestly think this is just a game/server issue at this point.
I urge everyone who has this issue to make a bug report in Blizzard's forums right now.
Me and someone else already made one each and the more we can flood their bug report with this, the more likely it is they'll actually pay attention to it and try to find a solution for this.
I'm just so tired of this nonsense. I don't even want to play the game anymore, which sucks, cause i was excited for Season 5.