I'm running Dell E5530 with AC 7260 and Netgear R6250 AC router. I haven't had much trouble with the last 2 sets of drivers. Currently running 16.10.x I can say that installing drivers and the ProSet utilities is more stable than just drivers and let Windows manage connectivity. I still have degraded 2.4 band performance. Also it is known issue with Intel cards and beamforming on the router. Intel� Wi-Fi Products — TechNote: Sporadic wireless disconnects caused by data reordering issue
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