Yes I have the same problem but it's with the fps. For about 10 to 20 minutes it will run smooth about 30 fps, then outta nowhere it will go straight down to 6 to 7 fps which is unplayable conditions. Then I would have to window out for about 2 minutes for it to go back to normal. I don't know if it's Blizzards fault or my lap top but I would love to know how to fix this issue. Thank you.