Recently after following this thread i tried and rolled back drivers to 14.8 that came with win8. I must say that so far after two days my connection is stable - no more few mins drop outs - but next issue poped out. Now the connection has super poor quality, its laggy and spiky pretty much all the time. If I want to do anything that requires realtime decision making (which my job requires me to do) Im screwed.
I also contacted Dell's tech support, after exchanging just a few emails they told me its impossible to change my wi-fi card and they're throwing some ideas, most of which I've already tried.
It looks like only Intel can do something about it but I suspect there's a reason why they stall. Maybe issue is so big that it cant be fixed by drivers, in that case I think someone should return our money or change our hardware. Maybe trying to reach media is not that malice thing to do but just our only solution.