Hey guys!

I was just bouncing some stems, but when I listened back to the wav files I made there was a big click in the beginning of some of the stems. I rebounced the stems in real-time, and the clicks were gone. Why does this happen? It has happened to me before.. It’s a bit scary, I don’t want to miss a click in a bounce. Also strange that it’s only on some of the stems, not all of them. I don’t use any particular plugins on the stems that clicked that I didn’t use on any of the other stems. No VIs or anything, just audio. Bounced the stems, didn’t export them. Did anny of you experience something similar? And know how to prevent it from happening?

Could be an automation turning a plug in on or off. Check for that.

Hmm.. There is actually no automation.. But it sounds like a plugin turning on and off.

Could be a plug-in, that uses its own worker threads. Those might fail with offline bounces.

I remember, I believe, Amplitube 2 or 3 doing these pops at the start of a session in the old Logic Pro 9. I'm talking about issues from more than a decade ago, so nothing remotely close to LPX/11 and modern plugins, but I've also seen on/off automations giving pops when using reverbs or delays. That's why I avoid using such types of automations (bypass, on off etc). I generally prefer to create a new track, insert the plugin there and then copy only the portions of the audio that I want the reverb/delay/whatever to affect instead of automating the main track because of these random pops.

Best of of luck and if you manage to find out the culprit let us know. Cheers.

Maybe its fate reminding you to put a 2 pop at the beginning of each stem.

Any update?

Not really. Just that I need to check every file before sending and if there are problems, I go back and bounce realtime. I also still have problems with automation getting out of sync when bouncing - rebuilding the project only temporarily fixes the issue. Very annoying.

I thought maybe Archetype amp sims was causing the problem, as they usually takes a lot of time loading when opening a project, but no. Then I thought it was a problem with pulsar mu doing a lot of oversampling when doing offline bounces, but also that wasn’t it. Now I think it might be gullfoss master, as that also does some extra oversampling when bouncing, but I haven’t checked yet

Logic has really been more glitchy than ever for me since I upgraded to M1 chip.