The other post is here

I have the Netgear router from Sky and I am pretty familiar with it. I never had any issues with the wireless connectivity but I can suggest a few steps to try:

1. Change the channel that the router is broadcasting wi-fi on.
2. Try it temporarily without wireless security
3. Change the type of wireless security


You can also call to the sky customer service number 0844 385 1222 for more technical support.

Post back after trying the above steps.

Two things spring to mind

1. You have all new Sky Q Equipment
2. You have moved properties

Possibility:
1. Equipment is faulty. Get a replacement Q Hub

2. Do you have powerline enabled? If so, turn it off, it can cause dropouts and hence Sky disabled the feature on the Q router, but some users manually turn it back on.

3. Line fault as discussed.

Given the line crackling I am opting for possibility 3.

In reply to a post by sophiajones:

You can also call to the sky customer service number 0844 385 1222 for more technical support.

Be very careful about ringing customer numbers posted by random people on the internet.

Find a number here: https://contactus.sky.com/