log into hub3 - 192.168.0.1 [or 192.168.100.1 if in modem mode] - DON'T SIGN IN, click - click router status [centre of screen] - and post the downstream and upstream figures - to see those press on the grey buttons/boxes labeled - upstream - downstream
80 is typical of a bad lan cable - if you have been getting 350 the spec of any cable must have been cat5e or better but a break in one of the wires or a bad connection in a plug could reduce the speed to about 80 so if you have not already reseat all lan cables and if that does not help change any/all
We can see there's currently an area fault which may be affecting your services, I'll include the information on this below.
Estimated repair time: 11 JUN 2020 15:00
You may be able to check for updates on this through our service status page, although, if this isn't a wider area fault it may not show here but you can also quote the reference above to any agent for this.