"I am curious about the PIDs, we usually build large drones and finding the right PIDs is always hard, auto-tune is a great help, but in some cases you have to guess a good starting number before the first flight, otherwise it's gonna end in a crash."

"Congratulations, impressive engineering! This kind of performance drives the industry forward!"

"You need higher C rating batteries, voltage drop is normal, but the quality of your batteries is very poor..."

"The single problem I have is that the quad is loosing altitude with forward flight, even in alt hold mode. Even the slightest forward flight will result in 30-40cm altitude loss... Once it stops it will climb back to the original altitude... It is…"

"Hello, I've done an auto tune on almost the same setup, the quad became a little bit under tuned. I have even try lower KV motors too, those one became over-tuned. Good luck! "