Just got a I2 and was curious about the range, when standing on ground at sea level flying in a fairly metro area if i bring the bird up to 400 ft and fly it straight out i get about 3000ft then start getting video interference and errors, i believe the I2 is set to 5.8ghz, not sure if it switches to 2.4 on its own if need be or maybe 2.4 is just better to use, thoughts?