Here you are procedure of CC ESC settings (below):
I did not wright this. It is copy paste from some reputable RR member.
Item 1 is what you need to do, before setting to governor mode.
Answering your question, seems 54% is way too low. You probably may want to increase pinion for governor be happy at ~75-85%.
MrMel's calculator is here: http://heli.dacsa.net/CalculatorV2/
1) Set ATVS to as close to 50 as possible and set your throttle curve to 0-50-100. ( note: remember the ATVS need to be brought in on 2 sides.) After achieving this , make sure the blades are off and with the power off to the esc, turn on the TX and go to full collective. Turn on the Heli and slowly begin to increase the throttle atv until you hear the esc beep. Add a couple points to it after the beep and then turn power off to the esc. Now pull the throttle or collective down to the bottom and turn power on to esc. Now open the atv slowly until you get the audibile alarm. Turn off the power to ESC and throttle is calibrated.
2)Checking for Recomended Headspeed- Now we are still in the fixed-endpoint Heli Mode and we are gonna find the recomended HS for our setup. I suggest fully charged Batterries and putting the blades back on for this next step. Go into the throttle curve and set all the values to zero, I am running 3 points on my curve and I have 0 pitch at center stick. Go to center stick on the TX and set all the throttle curve points to 0 and push the stick to the 0 degree setting at center. Now carefully put power on the heli and then the esc and you will here an alarm telling you the Heli is armed. Slowly increase the value to 75% on the throttle curve and when it stops increasing speed check it with a tach. This HS is your target HS or recomended HS. Now reduce the value back to 0 and shut it all down. My heli wanted to run around 1850.
3) Setting the Gov speed- After shutting down the Heli we will hook it to the Castle Link and enter the setup mode again. After entering the setup we will change the Heli mode to Heli Gov. Low. We disconect the link and hook up the control wire an d get ready to spool up again. Our throttle curve is still at 0 and we verify this at this time. After checking the stick is set to center at 0 pitch and we turn the heli on and the the esc. As we increase the throttle we see if the taget HS can be aquired by increasin g the throttle curve until we get to 100 %, mine only got to 1650 which is lower than the taget HS. Go to 0 on throttle curve and shut down. Hook back to Castle Link and go to Heli Gov. High- again verify 0 on throttle curve value at center stick with 0 pitch. Turn on heli and the put power on esc, wait for alarm and then increase value of throttle curve until desired HS is aquired (1850) . Shut down and your throttle curve value was probably around 38. Set the throttel curve to this value and set the Hold values in throttle hold to 0 . Put TX in hold and set the flight selector switch to idle 1 where the there is a straight line at 38 or desired value which yielded the HS as done earlier. Turn hold off and the heli will spool up slow. If there is a tail jerk after spool up then the gain should be reduced until jerk is gone. At the lower HS mine liked 16% Gov. Gain.
4) enjoy flying and I hope this helps. The gov. gain sets how aggressive the throttle is at stayi ng at the target speed. Too low is mushy and too high has an oscilation.
5) Startup in Gov. mode should always be with a switch so the value is put directly to the esc.