I'm still having major compatibility issues with my Galaxy Note 4 on OpenWRT, but it seems to apply to ALL OpenWRT devices.
The weird thing is it seems to work fine on the LAN but has issues with web related activity. I can't fathom why it would make any difference but I'm hoping its something that will be fixed in the next Android update as it seems to start with the previous update, so probably not OpenWRT related at all. Its just weird that it only affects OpenWRT APs.
Example, I load the LIFX app and it detects my bulbs instantly but takes about 15 seconds to display my Scenes as those require accessing the website. Connect my phone to a none OpenWRT AP and the scenes appear instantly. Same with web pages, the initial load takes many times longer when connected to OpenWRT and I have no idea why. Actual throughput is fine, once it gets going, but some apps can timeout.
WiFi does still sometimes drop as well, I think THAT is the only bit where ath10k is to blame.
Zen Internet (74Mbit/16Mbit) Steam/XBOX:
Alex Atkin UK PSN/WiiU:
AlexAtkinUK Website: http://csdprojects.co.ukRouter (pfSense): Intel DN2800MT WiFi (OpenWRT):
TP-Link Archer C7 v2, TP-Link WDR3600 x2, Buffalo WZR-HP-G300NH x2.