April 29, 2016
Recently, Apple updated Logic Pro X to a newer version: 10.1.
This update resulted in some crackling noises occurring when using Stutter Edit in this version of the host.
However, Apple put out a new update, 10.1.1, that has solved this issue. If you are experiencing this problem, please just update to Logic Pro X 10.1.1 or later.
If you have further questions about this subject, please contact support here.