If u only care about the legendary crafting mats, just do T7 with 1 and leave the other 3 in town. It will be a LOT faster and u wont have dysncs. Leave the boss fights for the last bounty of each act and use all 4 to kill it fast. That's how I did bounties with my Barbs. Using all 4 was a bitch to control at high speeds. Instead I just lowered the difficulty to T7 (u get the same amount of legendary mats from T7-10) I rushed with max speed items solo (Warzechian Armguard, Wreath of Lightning, etc.). That was a LOT faster than using all 4 thru all bounties. That or do split bounties with friends or public games with each account.
But if u care about legendaries and general mats, well ... suck it up

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