Ringo

What would "slow" be? Do you see an advertised "air speed" somewhere for the Yuneec?

I do know & realize that having a slow airspeed can be a real hindrance if one flies in winds above 10 mph. It means the drone can move away from you & take much longer to get back than you may have battery. A 10 mph drone speed flying with a 10 mph direct tail wind will move away @ 20 mph, but it will only "come home" at 0 mph. That can be a problem, even if you're sitting 1000' away. But, getting a true 100% head or tail wind component is rare. But, also one has to realize that NORMALLY, winds will increase in speed above 4-500' AGL, due to lack of surface friction. This is more prevalent in open (think farm ground) areas. But then again, 10 mph is a very slow airspeed.

Hopefully everyone understands the concept of airspeed once the drone is in the air. The airspeed of the drone is the same whether the drone is flying in a 5 mph or a 50 mph wind condition. It's suspended in a large mass of air & moving (or not) with that mass. In aviation training, I often used the analogy of the fly (insect) travelling from the back seat to the front seat of a car going 70 mph down the road. The fly theoretically flies at 5 mph, but when he makes that seat-to-seat trip, he's got a ground speed of 75 mph. Sometimes it helped to describe a canoe trip to students. You can paddle a canoe at 5 mph. But, if you put a canoe in a stream that is travelling at 5 mph & you attempt to paddle against the current (upstream), how far will you travel, physically, after 1 hr of paddling?

Answer = nowhere. You'll be sitting in the exact same spot in the stream, relative to the shore as when you pushed the canoe in the water. Same happens in the air with flying devices of any type.