Increase Postcallback loop speed

My setup:
-UBLOX-ODIN-W2
-GCC ARM Embedded Toolchain
-Mbed CLI

I notice that Minar working in tick. And one tick is half millisecond.
I guess the Postcallback loop time minimum is 0.5-1 millisecond. Can it be improved?

Question

No source file or test is named. Start by tracing Minar's tick and Postcallback scheduling on the UBLOX-ODIN-W2 with the GCC ARM Embedded Toolchain and Mbed CLI, then measure the claimed 0.5–1 millisecond minimum. Done requires a supported, measured conclusion about whether the loop can be made faster.

Written by the indexing model from the issue text.