I went through a lot of trouble with this 22-pole high-kV motor. On Simonk ESCs I've had a lot of desyncs, and I've burned a couple of BLHeli ESCs testing. So I decided to take a peek at ESC32 tech. It would still desync with Advance lower then 17, and I still have to play with Blanking and Switch Freq to see if behaviour changes, but it performs smoothly with the following params.
Today's prop was a 12x5.5 CF.