I also have an LG G2 phone and a 2013 Ford Escape.  Since I switched phones to the LG G2, the call quality has dropped as you explained.  Sometimes I can communicate, but about 50% of the time, the communication is sketchy at best.  I will occasionally have to redial to try to get a better connection.  But the other issue I have is receiving and listening to my texts.  When I receive a text, it will sometimes say I have received a text, but the option to listen is not available.  Other times it doesn't say that I received a text when I actually did.  When I try to go into the options portion of the my Touch, it says that my phone is not allowing the this feature.  So I turn off the bluetooth and connect the phone with the car, and allow the MAP (transfer of messages from phone to car) to be enabled.  Still doesn't work.  When I had my torque phone, it worked great.