I've test flown my 6350DA-12 with my old Hyperion Titan ESC but on the ground couldn't find any timing setting which did not screech at full throttle. I had 4 flights using the 'auto' timing setting and no detectable screeching in the air and plenty of power with the APC 20x13 prop.
I don't like the screeching noise though so am investigating ESC options to see if I can remove it. The advice I got back from Dualsky re the timing was to use what they refer to as 'low' and I clarified that to mean 0-3 degrees. I'll look to try a different esc next and see if I can avoid the screech.