Well the wake/sleep issue is cleared up still it seems on 17.12.0,5, however I had a connection drop today while on Wireless AC at home. I'll try switching back to 17.12.0.4 but I'm not sure a minor revision will make a difference in that.
I'm just so disappointed in this card, especially that it is in my brand new Dell Venue 11 Pro, which is not a cheap device.