So beginning to wish I hadn't upgraded my hub with my V6 box upgrade. I have my hub set up as a normal router but it doesn't seem to like you pushing it to much. It would seem that if the cctv is doing too much or the sonos has been on too long it needs to crash and reboot. Its usually only off a few minutes buy very annoying I was hoping it would be better than the superhub 2 not worse.
Thanks for posting and I'm sorry to hear that the new hub doesn't appear to be working smoothly with your devices. I'm having some difficulty getting any information from the Hub3 so can you post the hub's network log and power levels for us to have a look at? (go to 192.168.0.1). Is there any improvement changing the hubs wireless channel?