Netflix buffering every so often. Sky tests ok but it’s not good in house, alway

[Atexf06]

So annoying as we watch a film then buffer wait- watch/ buffer and wait again. Our phones never get above 1 bar and chose 4g instead. Really hard to work from home. Internet download speed differ between 0.1 to 11mbps but sky always seems to test same - good and 18mbps. Sky engineer came out and moved booster. Got 16mbps on measure but gone downhill Again. I'm paying for a booster and super fast. Don't know what to do, so upsetting 

[Highlinder]

@Atexf06 Could you please post your router stats following the link below.
https://helpforum.sky.com/t5/Broadband/How-to-find-your-Sky-Broadband-router-stats/td-p/2855717#M101...

[Atexf06]

I did try getting router info but passwords did not work. Spent 2 hrs with sky today because I could not work from home. I did all the troubleshooting, waste of time. They tell me that everything tests good so won't send engineer. I have raised a complaint but don't think sky are to bothered about losing us, sadly I think I am going to have to get a different broadband provider. All our phones on house have to use 4/3G as WiFi not strong enough. 

[Highlinder]

@Atexf06Which router do you have from the link below.

https://www.sky.com/help/diagnostics/sky-broadband-diagnostic/which-sky-hub-do-you-have-no 

[Atexf06]

Hi there

qw have the sky Q and broadband black box, thx

[Highlinder]

@Atexf06The username for the router is "admin" without the quotes, and the password is "sky" without the quotes.