Suggestion:  pick up a copy of PingPlotter, enter in, set it for 5 or 10 second resolution, then run it.  You get 14 days on the Standard/Pro edition to collect unlimited samples, and can switch to the free edition after that.  See what kind of reliability you get over 24/48 hours, and what kind of pings you get on each hop.  It might indicate any problems along the route, or if your connection drops out entirely.  Attached a sample plot on my VPN connection to this post so you ca