WiFi card Intel 7260 (laptop) - replacement options - Vostro 5470 wifi problem

I got last week a Vostro 5470 laptop, I love it so far, excepto for one thing, the WIFI Carda (adapter) is terrible.  I cannot even watch a movie on netflix properly, nor stream a video. 

It connects and disconnects, and it is very annoying, for reference check this thread: <https://communities.intel.com/thread/47983?start=0&tstart=0>

It´s been suggested that the problem wont go away, no matter what, and that a wifi adapter replacement is the only way, but being this a laptop wifi card, the form factor can be a problem.

Has anyone requested dell to change the WiFi adapter? 

Has anyone  replaced it in a Vostro 5470 sucesfully? If so, to which wifi card model? 

Any help would be appreciated!