Hi! I am planning to get me a phantom 4. Have had 5+hours on a phatom 3 and am really convinced. My main object for filming would be at work with huskies. I have been trying to search if its possible to turn off any ultrasound from the machine and I have got the idea that its related to the VPS(?) which is possible to disable. Does this disable all ultrasounds too? Would like to minimize any extra distractions from the already distracting machine to the dogs. How does this effect outdoor flight and filming? Also, where I live, the winter temperatures typically reach down to -45 Celsius (-49 Fahrenheit). Does anyone have any first hand knowledge or reliable information about operating the drone in these temperatures? Batterylife will be a lot shorter thats for sure, but can the machine take the cold? Thx! Edit: Battery related tips unless software related are not necessary Also living here makes me know how phones/tablets behave in the cold. Just interested about the drone/controller related parts.