Hearthstone is unplayable in a majority of it’s Play Modes (including Hearthstone and Battlegrounds) at all times. It’s been like this for years. What is the point of using Your players as test dummies, Blizzard? Your game is just legit unplayable.
That’s entirely your prerogative. If you’re going to leave I would suggest staying away for at least a few months, though. That way if you do ever get curious enough to come back, enough time will have passed that you’ll be eligible for the loaner deck program they have going on. They’re surprisingly well crafted most of the time - intelligent piloting will get you into somewhere between Gold 5 - Diamond 5 with those.