Looking at the graph you've got very variable latency. Have you had a software update to 9.1.1811.401 by any chance? Do you know when this issue started occurring? If so, check for when the update was carried out, any correlation?
I can't remember when it started exactly but at least a month as I've replaced the Ethernet cable as I noticed the clip was broken at one end and thought that was causing my drop out issues, but apparently not.
How do I find out when the hub was updated? I know I did a full factory reset on it two weeks ago and set it up with the minimal of changes.
Other hard wired PC/TiVo (x2)/TV's (x2) are complain about intermittent lack of internet connection.
Thank you MikeRobbo I have previously confirmed software version of 9.1.1811.401. We were trying to ascertain when the update took place to see if that has caused the connection issues but as I performed a reset about two weeks ago we are unable to check that. No connectivity at all since about 17:30 today (as can be seen from my BQM link above).
I have tried support via chat for nearly two hours but didn’t get to talk to anyone so see how it is in the morning.
On the M500 you should be getting an upload speed of 36Mbps, and your two upload channels aren't good enough for this (can lead to download problems). Can you power off your hub, check all cable connections for tightness and reboot. Post more stats after a day. If the Post RS Errors reappear and your problem remains VM can send round a tech to do a hub swap, if that doesn't work someone in Networking has to investigate.