I'm running win 10 (10576), using a realtek RTL8811AU 802.11ac usb wifi stick, and connecting to my network over an airport extreme wifi also running 802.11ac.
Attached via ethernet cable to the AP extreme is a WD my cloud EX2 NAS. The problem is my transfer rates are extremely slow. Transferring a 1.0 GB media file takes over an hour, and runs at ~400KB/s. 802.11ac supposedly can run around 1Gbps, and the write speed on the NAS shouldn't be the bottleneck...
If I go to speed test, I get 20Mbps, which is spot on. So I'm transferring data over internet pretty fast. It's just on my local network that things are pathetically slow. There are only a couple of idle devices connected... iPhone and stuff like that, so the network shouldn't be congested (?).
How can I find out what's going on? I need to transfer 2TB of data to the NAS... it will take a year at these speeds :(