So, I've been having this issue and I can't figure out how to fix this, let me explain:
I was writing a song, just recorded some guitars through some amp sims, wonderful. So I want to add drums, EZdrummer 3, simple enough. I write the midi and I get sound.
Now, I want the drums to sound a bit processed but I'm focused on writing, so I put on some Parallel compression on the drums, fast and effective. And here's where the issue comes in.
The raw channel and the parallel channel are not in sync and sounds out of phase when I add the plugin.
Now you might say it's the plugin changing phase, but no, since that delay happens even if the plugin is bypassed and with any plugin.
So it might be how I set the Parallel channel, but no, since without adding the plugin, pressing the phase flip on the channel get a perfect null.
I've tried different ways to get a Parallel channel. Creating a send from the Raw track to an Aux track and using this Aux track as the Parallel, still the same result.
In the Raw track, instead of having it output to master, I output to a Patch Point, and then adding 2 tracks with the patch point as the inputs, and one track as raw and the other as Parallel, still the same result.
But the funny thing is, if I start the playback, and while it's playing I switch the Parallel channels Interleave to mono and back to stereo, the delay is gone and it's in sync... and when I stop the playback, and start again, it's out of sync again.
There's clearly some delay compensation that's not happening or something like that.
For the time being I have a way to get around this, but I figured this should no happen. The way I get around this is adding the compressor to the Raw channel also but having it bypassed.
So yeah, just putting this issue out there, thanks for reading!