So I would have to say 40mph is pretty safe. Maybe 45mph if the wind is right. It did really well, I was really impressed. And bear in mind I still have my CGO3 camera on. I want to do more testing with other modes as well, but I'm waiting until I get my CGO3+ back from Yuneec. I do have questions about some odd behavior in the video. I'll let you guys watch it first, and then we can discuss. This was ALL done with "follow me" mode. The slow part (you'll know it) was RTH. (And you might be able to guess why that was happening) The very end was "follow me" with some stick input. Enjoy.