Greetings from Texas,
Not sure if anyone is running PIX4D however I am not sure why but I am getting bad results with my data. I am flying 3dr Solo with GoPro4 with 5.4MM Lens. I am flying at 300ft with 70% sidelap taking pictures every two seconds. Below is a sample image along with details from PIX4d. The final orthophoto shows items that are east of the residence on the west side. I am not sure if I am geotagging wrong or using the wrong datums or coordinate systems.