Couldn't see them mobile -
my only question really is - with dalarian was first released "EVERYONE" claimed the same issues - CPU bound problems, which then magically were fixed; and were never actually CPU issues. (IIIRC it was a missloading of data between GPU/CPU)
could this be the same? Blizzard has never been good with releases or patches.
I agree 100% that you shouldn't downgrade for your #1 game. no matter what else is better; is this a known issue on the blizzard forums? or just something "you've" noticed? I sadly won't be able to help more myself. (too much to download by the time you'd like results)