Recently having issues with my IPSec tunnels to my AWS VPC created with the "AWS VPC VPN Wizard", I opened a ticket with AWS support. I ended up sharing my IPSec settings and logs with AWS VPN support. They wrote me back an informed me that the IPSec tunnels were not configured correctly! AWS said that both tunnels were not supposed to be active at the same time, and their logs and my logs showed that traffic was traveling across both tunnels. They said that only one tunnel was supposed to be active and have traffic routed over it, and the second tunnel was only to be a standby to be used if the first tunnel was down or not passing traffic. I have opened a ticket with NetGate (the current developer of pfSense who offers commercial support), to investigate these issues. I'll post back the results of their findings here.