Hello! Thanks for the work!

But I tried an alternative firmware and found that the operators are working in free-running mode.

And with its use, everything sounds much quieter.
This is normal?
I really wanted the operators to work with a fixed phase, as in the standard firmware, in order to use Preenfm2 as a 8 parts percussion module.

I did a test to show the difference.
First, the standard firmware plays.