That is quite impressive.
I guess you are using your own program to interface to yoke with the flight simulator?
When I was trying the BLDC I had a lot of stability issues with the integration part of the PI controller, it was oscillating and overshooting wildly as soon as I was applying some meaningful value.
But you are doing a huge work…
I have removed the BLDC for now and gone to plain DC motors. Zero cogging and no complicated control 
I’m working on the PCB with the driver for these motors at the moment.