Well going from a Master Airscrew 10x6x3 to a 11x6x2 APC prop makes a WORLD of difference.

I initially put the MA prop on the PTS but after moving to the 11x6x2 I haven't looked back.

The two props are equivalent pitch & size wise...

Most of the performance improvement, which was substantial, had to come from the better efficiency of the 2 blade versus the 3 blades.