OpenWrt "Chaos Calmer" 15.05 released

> The speed benefits in normal use cases like person's home are often theoretical.

The practical benefits in my experience could be negative. A Linksys router bought in spring 2014 worked slower with ac than with n against a macbook and a Linux laptop with Intel wifi card. That was with either stock firmware or later updates. Finally I got ASUS RT-AC66U that really showed a difference with ac and where I could install dd-wrt. Still even with that I had to install an external directional antenna so backing up video files from SD cards to a home server over WiFi would be just a little bit slower than copping to a local notebook drive.