Been a long time since I last checked in and wanted to see if anyone else was experiencing a complete loss of 5g and the 2.4 slows to a max rate of 6Mbps. This is a not a router problem, when it happens you can't see any one of 4 5g AP's and other 5g users continue to work. I have tried 3 cards and it doesn't matter they all have same issue. The sony came with a intel 6235 which when reinstalled works fine. I have tried every driver combination so far no difference. It seems like the AC speed or format is causing a issue with my SVS1313AXGB. Bluetooth had been quite a challenge too trying to us a Bluetooth mouse. Last week I reimaged with the AC 7260 and now the Bluetooth is working fine but the complete loss of 5g when using AC r7000 or AC R6300v2 is still happening as it did before. The only fix is to disable enable ac7260 then all is good again. Drivers are latest listed on this site. Makes no difference which drivers are used same problem since upgrading last August. The speed while working are great 866.7 all day long then randomly it's as if the card was disable on 5g and then 2.4 only connects at 6Mbps.
Win 7 Pro 64 i5 12gb ram