If its doing it almost exactly every 30 minutes, then that would suggest that there is something causing electrical interference, possible something within your house. I assume this happens all the time, day and night?
It was an average, but yeah, day and night. It's not exactly 30 mins. Could last as long as 2 hours with internet. Also there isn't anything else being used in an abnormal way other than regular laptops 😕
If hub has already been replaced and numerous engineer visits it certainly sounds like something in your home is causing interference. do you have anything that would use internet like burglar alarm or something 'reporting in'
so far even with all the drops in connection your speed is still ok with no adverse effects
Welcome to the Community and thanks for your posts!
I'm sorry for the problems you're having with your broadband and for the time this has been going on. I have sent you a private message with instructions on how you can send us over your details and we'll look into this for you. See: Private messages