Hi Kevin, thanks for you prompt response
Attached the DXDiag report
Currently I am using driver 17.12.0.4 OEM, before that I've used several versions of the 17 driver and 16.6, 16.10, all with various results, but the main problem, copying files to my wired NAS slows to a crawl.
My Router is a Netgear R6200 AC Firmware is the latest version provided by Netgear: V1.0.1.52_1.0.41
As for devices, I have several:
3 laptops - 1 uses 5 Ghz, the other 2 2.4 Ghz
1 File server - Acer Easystore H340 with Windows Server 2012 Essentials R2 - Wired Cat 6
2 Tablets - 2.4 Ghz
4 iPhones - 1 on 5 Ghz, the other 3 2.4 Ghz
2 Smart TV's - 1 on 2.4 Ghz, the other Wired Cat 6
1 Blu-Ray Player - Wired Cat 6
I have setup MAC Address filtering and just allow those devices to connect, have guest networks disabled
