Scott, altitude and temperature definitely have an effect. You're starting at an altitude most consumer drones never reach. My suggestion is if you stay with Yuneec, Typhoon H with maybe 4 batteries, because you'll still see less battery life.
Or go DJI Mavic or P4. It is what it is.
Hey all. Can get a breeze dirt cheap, thinking of using it for dronebase missions until I can afford better. I'm part 107 certified, so geofencing/nfz not an issue. Any pros out there, can you give me some insight? Much appreciated!