In reply to your Pingtest above, are you using the SuperHub?
and if so, disabling the following may improve line quality:
- port scan protection
- firewall features
- ip flood detection
They can be found by doing the following steps:
Go to
http://192.168.100.1
Logging in (details can be found on side of SuperHub, if not changed)
Advanced settings (link is at bottom)
and then
Services, which is found under
Content Filtering on the left sidebar.
Hope this helps