I was playing around in offline today with the wind and had it turned up to 127mph out of the NE. I upped a 163 into the wind and climbed to about 5K and leveled at full throttle. It then accelerated to about 737mph TAS and 615mph ground speed. So I turned around and went with the wind and reached 625mph ground speed and only 499mph TAS. Shouldn't this be the other way around? Ground speed shouldn't be the limiting factor, but TAS should. In this test it proved to be the opposite in AH.
Also wind noise is linked to ground speed. I was able to get the wind noise to play at only 170mph TAS.