Small 3% rpm difference between ESC 1 and the other 3 ESC’s

I have some small rpm difference between ESC 1 and the other 3 ESC’s.

The outcome as shown (picture), is when the copter is on the ground (minimal 3% Spin Arm).

Do I have to worry about this slight difference in the long run?

Setup:

ArduCopter V4.5.7, MatekH743-bdshot (DShot600) (BLHELI32/Am32/Kiss+EDT) .

ESC: SEQURE SQESC 28120, 120A on 8S. Motors: B4218 330KV with 15 inch props.

It’s meaningless if it’s on the ground.