Same here.
Also, I've noticed it the most while and after playing Minecraft, and until I found this thread, I thought maybe it was specific to Minecraft (but I didn't install it until after upgrading to 12.1).
This is on a 16" MBP M1 Max.
Just wanted to provide an update on my particular situation --
I'm not sure if anyone else experiencing this issue had MS Teams installed - but I did, and, after a weird suspicion that maybe my speaker popping/crackling could be related to it, I completed uninstalled it.
So far, it seems to have resolved my issue. I'll continue monitoring, but, I've already gone much longer than normal before I hear the crackling/popping while playing any kind of audio.
I happened to be running a version of MS Teams that installed a Core Audio driver. I happened to be using a preview version of MS Teams, which enabled the option to share my Computer Audio during a meeting. Uninstalling MS Teams doesn't remove this driver, so you need to do it manually (
via these instructions I found):
1. Open Finder
2. Use the menu “Go” -> “Go to folder…” (or press Shift + Command + G)
3. Copy the following path: /Library/Audio/Plug-Ins/HAL
4. Click “Go”
5. Delete the audio driver. You will need to enter the administrator password or use your touch id.
6. Restart your computer. After it, the driver will disappear from your system sound preferences.
One thing I noticed was that the Core Audio Driver was showing as "Intel" in the Activity Monitor. Perhaps that was a contributing factor? The only other two Core Audio Drivers that I have running are for Zoom and Telestream's ScreenFlow, and both show as "Apple" under "Kind".
Perhaps the common factor here could be rogue Core Audio Drivers, possibly running in emulation?
Will continue to monitor for the rest of the day and post back if the fix seems permanent.
UPDATE: This seems to have had some effect, but I do still experience the popping. So this wasn't the end-all be-all I was hoping it would be. Hopefully the upcomiing 12.2 Monterey update will address this.