I get a lot of this "You must restart the Blizzard client to continue playing .....". Probably 4-5 times since launch. My rig can handle any game quite well with 100mb down fiber so I'm not sure where this is coming from.
Yeah i play PUBG and DOOM on my rig without all these issues so it has to be on Bungies end... Also know its not my internet when i can play other games for hours on end and never get DCd
If it is anything like the first one the real boss is the server connections. You'll either learn to live with it or destroy your rig when you get kick from that final raid boss victory xD
EDIT: My DCs were due to the clan roster. After leaving the clan i have not DCd once. Although there is still a memory leak somewhere in game as i get a massive drop of 20-30 frames after playing for and hour or 2.
I have not run into any issues and Im in a clan. Perhaps the size of the clan contributes as mine is small. In D1 my friend had a microwave when used would lag his ps4 out and it happened during a boss fight. Anytime he wanted to cheat and lag out the boss he would go warm something up in the micro