My top speed is 80.4 mph. I was about 400ft high and I guess I hit a headwind. It really just depends on the wind but make sure your props are balanced. Dubro 499 and a rod for p4 blades are fairly cheap.
I'm flying high
I'm flying directly with tail wind
I'm flying level but ground is uphill
I'm approaching and going over a line of trees
I'm flying straight, no turns
I'm in ATTI