FabFilter

Sorry, additional detail: NOT running Logic in Rosetta mode.

Spectral dynamics adds something like between 64ms and 192ms, depending on your settings, of latency.

To clarify, this is not during recording or input monitoring. This is during mixing; shouldn't delay compensation take care of that?

Oh, sorry, I misunderstood. You mean the delay isn't being compensated correctly on one of the tracks. That sounds like a Logic problem. I believe Logic sometimes has problems with delay compensation in certain track routing configurations, but I'm not sure what the status is in 2024.

Im running Logic (also M1 Pro) and it's fine.

You need to restart playback after enabling spectral dynamics, because delay compensation needs to be recalculated

Having the same problem. Studio one 7. its definitely a bug!
Everything is working fine, until I activate spectral processing.
And after deactivating only this function the audio is played earlier. Very strange.
Only with pro-Q4. So this is 100% a plug-in bug.

Fix it please

I can't replicate either, no matter how hard i try.

testing on macOS 14.5:

in Logic 11.0.1 it works as expected:
when you enable spectral dynamics during playback, playback gets delayed.
If you restart playback, it gets compensated.
if you now disable it during playback , the track will again be early.

in StudioOne 6.6 AU/VST2/VST3:
When you enable/disable during playback, playback skips and gets recompensated so it's in time.
can't be arsed to upgrade to V7 just for test it because it ain't my main DAW.

Even after multiple system reboots, and installing the 4.01 updater today (and restarting again), this is still happening to me.

The delay persists even if I disable the band that has Spectral mode enabled; only if I Clear Spectral entirely does it hold the correct timing.

Here's a video:
imgur.com/a/M2yuc2P

Is there an official bug reporting form, or does FF monitor these threads?

Just want to second that I'm experiencing this issue intermittently as well, with the same setup - except on a brand-new M4 mac mini with 24GB ram. I'll upvote a video soon!

Oh, and to be clear: the delay is less on 4.01 than it was on 4.00, but it's still unusable as-is. :(

Brian i work on Logic (11.1.1 and Sequioa 15.2)
And delay compensation works flawlessly with ProQ4 - both 4.0 and 4.0.1

Check your latency compensation settings

A-HA! My compensation was set to Audio and Software Instrument tracks.

I could only test briefly, but changing it to "All" seems to have resolved the delay.

But that makes me curious, because these **are** Audio tracks.

Hmmmm...

I will test further when I have a chance, to make sure this did indeed fix the issue. Thanks!

same issue with the latest version of ProTools running the latest Sequoia OS (on an M2 Ultra tower with PLENTY of ram).. massive additional delay happening. If I add a FF MB or C2 to the track, it pushes it past ProTools delay compensation limits and I get the dreaded red "DLY' light....

ProTools delay compensation is notorious for... unreliability.
Try using lower linear phase resolution and see if it compensates better.

Also, RAM has absolutely nothing to do with how much latency your system can handle or how much latency a plugin produces