Have you ever encountered this problem? At first, when your plane is flying higher, sometimes your speed decreases, but sometimes it increases. An easy solution,if you speed go faster when flying higher. Press the speedometer until it shows the letters from IAS to TAS. The problem is solved.
Uh what? You don’t actually think that makes you go faster, do you?
That doesn't actually speed up your plane, it just changes the speed to be accurate at the ground level