I have been having a consistent problem with small clicks happening at the start of playback.
This only happens after audio has already been played and then I skip ahead and go back and play again.
I believe this is due to the audio not being cleared from the buffer before the playback begins.
Depending on the plugin used I can clearly hear that it was audio from the same point in the song that I stopped playback in before.
This causes the biggest problem when I use the Render Region Matrix and every song starts with a small click. This is a huge problem for mastering.
I imagine the solution would be to clear the buffer before playback (or going to the next region when rendering).
Below is a short list of some of the plugins that I have found have this problem. It is not all plugins that do this but many of them.
Melda MStereoProcessor (version 11)
Fabfilter Saturn (with HQ on)
Slate Verbsuite Classics and Trigger 2
Sknote Soundbrigade
Valhalla Shimmer & Ubermod (but not Room, Plate or VintageVerb)
Soundtoys Echoboy, Decapitator, Phase Mistress and Little AlterBoy (but not Little Plate or Tremolator)
To replicate:
1. Create a session and put a piece of audio on a track about a minute in to the session.
2. Add any of the plugins mentioned above and then play the track for a few seconds
3. Stop playback and quickly play in the session before the audio track starts, you should either hear or see a small click on your meters
You can see an illustration of this in the attached screenshot from Fabfilter Pro-L2.
In this image I played the song and then quickly played before the song and you can clearly see the small blip that should not be there.
(In the case of using Slate Trigger this sound will often cause false triggers/drum hits at the start of the song)
I have tried experimenting with every possible combination of buffer settings as well as running the plugins bridged with no luck.
I see the option to "Hard reset on playback start" when right clicking on a plugin in the FX browser but that doesn't seem to make any difference.
This has been happening as long as I can remember and it's causing me a lot of problems.
Please let me know if you have any questions/need any more info.
Thank you!!