Disabling Powersave in NetworkManager did it for me. I was barely getting 300kB/s on certain workloads on my 2.4GHz network whereas I could get full speed on my 5GHz one. By disabling the power management in NetworkManager, I got full speed all the time and I haven't really noticed any decrease in power consumption.
Running Ubuntu 16.04.2, Kernel 4.10 (HWE branch). Stock installation done just a few minutes ago. 02:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32) Doing the following will disable power saving in Network Manager by default: $ sudo sed -i 's/wifi.powersave = 3/wifi.powersave = 2/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1670041 Title: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
