Loaded this today from 1.09.
As you may recall from my other posts, I had issues with 1.10 and the earlier 1.11 firmware. They would not play nice with Roku, chromecast audio and several mobile devices (mainly iOS). Those devices would constantly disconnect and reconnect to the router. I know several others had the same kind of luck and we all went back to 1.09 firmware.
Things were going well here with the 1.11 build2 beta until I tested Roku out. A few minutes into a 1080p stream the device was booted. I then set my transmission power to medium and so far so good! I'm about 30 min into the movie on Roku. All other devices are stable (regardless of transmission power). I really want off the 1.09 firmware due to security issues.
Some items to note: I do not have a lot of other wireless traffic. I live in an old orchard with one neighbor close enough for me to barely pick up their wireless signal from one side of my house (they are using the new google home wifi). The old stability issues with other firmware happened when no one was in that house, so it wasn't a congestion issue. Current settings beyond default are: new admin password, up/down speeds defined in QoS menu, guest zone on with password (internet only), and wireless transmission power lowered to medium.
I'll report back with results in a day or so. Fingers crossed!