Hello, Steliosh
Hobbywing engineers analyze the problem, and we guess the total timing is too big. If the "mechanical timing of the motor + ESC timing" is too big, it may cause problems for Sensored working mode. In such a case, the ESC will automatically change to sensorless working mode, that causes a slow speed.
please try to set a lower timing to ensure that ESC always work properly with sensored mode in the entire running time.
And the LED status can help you to know what happeded:
1) If the ESC changes to sensorless mode, both red LED and green LED will flash
2) If the ESC enters low voltage cutoff mode, only red LED flashes
3)If the ESC enters over-heat protection mode, only green LED flashes
we hope the above information is helpful. Have fun in the weekend!