Have good wifi connection to box. But internet not working or very slow

[Gnome1]

Small household, not that much connected to wifi. But been finishing last couple months that whilst shows great connection to hub and says devices keep getting issues where internet connection to devices such as alexa and pcs drop out compelty or the connection just goes on a go slow can weight 5 min for it to connect. This morning especially bad cannot connect to work at all due to connection. Unable to check app at time as that also does not xonnect but hub box itself shows all green. Starting to get w major issue now 

[GD1]

@Gnome1   Please can you post your router stats so the forum can advise on any issues. This link explains how to do that https://helpforum.sky.com/t5/Broadband/How-to-find-your-Sky-Broadband-router-stats/td-p/2855717#