After using "enhance audio" and "render and replace" a nested audio sequence, glitch audio appear

[cedric1573]

• Issue - "audio enhance" create glitched audio where sections of a same audio clip got mixed together for a short period specifically in the begining of a sentence randomly(sometimes it doesn't glitch)
• Steps to reproduce - I recorded a voice over and cut it into a coherent audio track, with gaps between some clips for pacing adjustment, then I nested the whole track as one "audio clip", then I "render and replace" said clip(sometime I don't render it), then I use the "Enchance" feature, after that I might render and replace it again in order to be able to cut it for further adjustments without the programme re-"enhance" the clips automatically.
• Expected result - Audio should be clean without repeated audio appear in some part of the clip
• Actual result -  Glitch audio appear in some part of the clip.
• Adobe Premiere Pro version - 25.2.0
• Operating system - Mac OS
• Format - audio waveform

I have a 2020 Intel iMac and a M4 pro macbookpro, this specific issue only happen on the M4 pro. I suspect it's something to do with the caching of audio clips in the process, because the issue only appear in the "begining" of a audio clip(no one particular), but as I mentioned I nested the whole tracks, it should be treated a single audio clip, but the programme still recognize the "begining" of a clip inside the nested sequence.

I should also add that the glitch sometimes appear during in a different order of process. For example, before "enhance", I might not "render and replace" the nested sequence, but do it after I "enhance" it, the issue still might appear( I said "might" but it actually happened 100% of the time, it's just seemingly at random places).

I try to fix it and so far sucessful in my case: I use "room tone" or "blank" audio clips to filled the gap inside the nested sequence, then I "enhance" it and finally "render and replace" it, the issue went away. I didn't do a systemmatic check and comparison of each time this issue happened, for example I'm not sure if it definetly happen when there is a gap before a clip inside the nested sequence, but I hope it can provide some info.

Thank you for your time.

[Dani_V.]

Hi @cedric1573,

Welcome to the Premiere Pro forums and thank you for submitting a bug report! The steps to reproduce the problem are very helpful.

A few questions: What are the audio source file specs (type of file, audio sample rate, etc) and do these match the nest and sequence settings sample rate? If you right-click one of these rendered files on the timeline and "Reveal in Finder", it should show you where these files are being stored—can you hear the glitches if you play these in Finder?

Sorry for the frustration, hope we can help you soon.
Dani