Hi, ever since the Uldum release I have had this problem on my main PC. I would open it, for a few seconds it would be fine, it would start loading into the game, then suddenly it would be incredibly laggy. It takes about 3-4 minutes for it to finally disconnect and say “playful sprites have interrupted…”. Opening the game in Administrator Mode causes it to instantly close.
I have tried restarting my PC, Re-installing HS, updating my drivers.
I did try opening the client on a second user on my computer, and for some reason that works. However this is not a work around that is convenient for me since I’d have to set everything up on that second account just to play hearthstone.
Any help is greatly appreciated.