Don't waste your time with this.
I have tried every possible option. The only safe solution is to NEVER connect your Sky Q box to the internet. You can still view and record programmes, but you'll not be able to use things like YouTube or view bills via the Q box.
Here is why this is all happening:
The Sky Q box gives out a hotspot signal at all times (even if not connected to internet) with a Sky name different from your router Sky name. You can test this by viewing available WiFi signals from any device. You will see your normal broadband router name (SKY if your with Sky) and a different Sky name coming from your Sky Q (also SKY).
If you have Sky broadband, and you connect your Sky Q box to the internet (which requires the WPS button on your router), the Sky Q box will never allow you to disable the hotspot feature and, for some reason, the Sky Q box itself then takes over control of your router WiFi to become the device that gives out WiFi signal to ALL of your devices.
Therefore, when internet cuts out from your Sky Q box, internet will ALSO cut out for ALL of your devices THAT YOU BELIEVE ARE ONLY CONNECTED TO YOUR ROUTER.
And yes, this means that when your Sky Q box is regularly cutting off its own internet during the night (~2:45am), it will also be cutting off internet for all your home devices. This will build up errors, update problems, and horrible glitches on devices like Amazon Alexa, which in my case eventually caused it to become unresponsive.
Important: no matter what you do with the Eco or standby settings on Sky Q, even if all of the options are turned off, the box WILL STILL cut out the internet at night, leading to all these other problems, simply because you have chosen to connect your Sky Q box to the internet.
This situation may only be the case if you're broadband is with Sky, due to the WPS button method of connecting your Sky Q to internet. I'm not sure what happens if you try to connect it to Virgin Broadband, for example. Perhaps it all works fine if not using the WPS button, or perhaps exactly the same situation unfolds even if not using the button, which would not surprise me in the slightest.
So, like I said at the beginning, until Sky gets their act together and sorts this problem out, connecting your Sky Q box to your Sky broadband internet (and perhaps other internet providers) puts ALL of your other devices at risk of becoming unresponsive. There is no way to prevent the Sky Q box from cutting off internet to itself and all router-connected devices at night.
The ONLY safe method therefore, is to NEVER connect your Sky Q box to the internet. That way, you KNOW that ALL of your devices are connected to where they SHOULD be connected: to your router, and not Sky Q.
I hope this helps to clear things up!
