Brushless Motor stuttering - now it was fixed.

Bad wiring can cause BLDC stuttering problems.
in my case, it is always stuttering when I use 12a esc with 2s battery
then when I unplug 2s battery, it can spin well, but esc has increasing temperature.
when I put 2s battery back ,it started stuttering so I decided to hold the wire tightly.
when it comes to the right position it start to work.
now I assume there are 2 possible causes of stuttering, 1. supply power 2. wiring