Multi-wan setup and high latency on one connection

[crustymonkey]

Though I recently updated my machine to 26.1, I was seeing this odd behavior on 25.x as well.

I just added another internet connection to my firewall (had xfinity and just added Quantum).  I setup multi-wan and I'm using 8.8.8.8 as the monitor IP on my xfinity connection.  I setup the quantum connection to use 1.1.1.1 (and I've tried others).  The setup all appears to be correct (`netstat -rn` looks correct).  However, the problem I'm having is that the web interface is showing that the quantum connection latencies are insane, between 500 and 1200ms.  However, if I ssh to the firewall and just `ping 1.1.1.1` from the command-line, I see what I would expect in no packet loss and a latency of 3 to 5ms.

I'm not sure how opnsense is testing these connections, exactly, but it appears there is a flaw in the evaluation or I'm missing some setting somewhere.  I'm wondering if anyone else has run into this?