As said: get rid of the Actiontec as the router.
If you want the wireless option still there: do what already has been posted (enable Ethernet, use pfSense as main router), but then connect the Actiontec to the LAN side, disable all its routing, NAT, DHCP etc., essentially putting it in bridge mode, and then it's an AP (which is what you want, you don't need a wireless router, but only a wireless access point).