FabFilter User Forum
Q4 Latency when auditioning presets
Logic 11.1.2 M1 Mac Sequoia 15.1.1
With a 2 track test project, 1 track drum loop audio, 1 track bass audio with a single Q4 instance on the bass - 4 bars looped.
With Q4 set to preset "Bass Gtr - Brighten", with the tracking playing selecting preset "Djent Bass Punch and Cut" track goes way out of synch and stays like that.
Reselecting "Bass Gtr - Brighten" tracks are back in synch.
Very weird, moving to some of the other bass presets are fine and some aren't.
Midiman — Jan 25, 2025
Some presets are using spectral bands, which is a linear phase process and will introduce some latency. Logic does not compensate for the latency while Logic is in playback, it will only adjust the latency when you stop playback. So when you enable or disable spectral mode or linear process processing, your signal can be out of sync until you restart playback.