Yes I used the same form factor half minicard AC7260.HMW in both PC's.
The laptop was originally fitted with an oem N6235 card. The desktop was made up from parts by myself and originally used a standard TP-Link Dual Band PCIe adapter, but to be able to use WIDI, I changed to a BPlus MP2H-7260 PCIe adapter into which is fitted an AC7260.
Since my OP I have not had seen another AP Crash reported but it might be too soon to tell. I don't really understand what the Zero Configuration Service is all about but to give it some chance, I have now set the Proset / Wireless Zero Configuration Service to Automatic (Delayed Start) in Services.