Same here. I am lucky if I get that. I use a windsurfer and get get almost a mile in the right conditions. But nowhere near the 3 miles advertised stock. I think the last update did something to the range, because it definitely reduced it somehow.
Side note, this is odd, but when i use my Android tablet, a Nvidia K1, I get a much farther range than with the ipad mini 4. About 2000 feet more. I tested this again yesterday, and sure enough, for some reason the K1 lets me fly farther than the ipad. same settings on both. Wifi off on both.