News, I did some Prop-comparison to find some spares for the Tiger CF, and found out something very interresting.
According the Yaw-problem, the left part of the LOG is made with Graupner eProp 11x5 and the right part is made with some rcTimer CF 12x4.5.
Important is that the X8 flies much smoother with the 12x4.5, the VIN is more flat and the Yaw corrections are less compared to the 11x5.
I had befor the feeling that the Tiger CF run also smoother and also the wooden Gemfan SF props 12x4.
What brings me to the point that the combination AQ-FC, ESC32 work better with a little lower propeller pitch.
Too bad, i have no 12x3.8 here to try
see your selve (red line FC-YAW):
download high-res picture: