How to identify a problem with sound in Unity?

The bottom line: passed the project on optimization. Code is written very badly and a lot of problems. But newly added task: on some system configurations, starts grinding sound. And only in build and in the editor it seems not one has managed to reproduce the problem.

Here's a system where you cant with sound
Here is a video where you can hear the school -

Most of the sound is played using PlayOneShot. It is not clear why this might be and how to fix it. On stage, the average DSP Load is somewhere around 5%, and in the Profiler, Audi writes that loaded around 30 videos, on 103 megabytes, and somewhere in the 5-10 active Audio Source.

Do not tell me what could be the problem?
July 9th 19 at 13:02

Find more questions by tags AudioC#Unity Game Engine