Sorry to hear you're experiencing issues again bluetac. Checking things over from here I'm unable to detect any obvious issues everything appears to be OK.
I understand you're using the hub in modem mode - have you been able to test the connection in router mode without the 3rd party router included in the setup so we can rule out any issues there?
It would also be helpful if you can post up your hub/connection logs (and fresh BQM data) so we can check to see if there is a problem there. Please avoid screen-caps, use the method below:
In your browser’s URL box type in http://192.168.0.1 (or http://192.168.100.1 - if in modem mode) and hit return. When the page loads don't log in but click ‘Check Router Status’.. Copy full sets of data onto here from the downstream, upstream, & network logs pages and paste them here. Please don’t include personal data or MAC addresses - if you copy/paste the data the forum software should blank them out for you.
Tom