Mine works fine. The issue I've personally run across as that some routers with 11n (QCA based are the only ones I've found the issue with) "break" when Intel 7260ac is running with U-APSD enabled. I'll get 3-4MB/sec performance if U-APSD is enabled on all of my QCA based routers on 2.4GHz and 5GHz bands if they are running 11n. If I am running in 11ac mode, works fine. If I disable U-APSD on my 7260ac, it works great (IE >28MB/sec on 2.4GHz 40MHz and 5GHz on 11n close to the router).
I have seen none of the sleep issues a handful of others have had. Blue tooth works just fine with my wireless adapter as well.
I just wish Intel would release the 7265ac in mini-PCIe and not only m.2. The 7265ac is both somewhat lower power, but also a fair amount faster than the couple year old 7260ac.