FabFilter User Forum
Pro Q4 CLAP Version issues in reaper - Are we all beta testers?
Using Envelope Automation on "Dynamic Range" in Reaper 7.39 with CLAP Version of Pro Q4 mutes audio instantly. Latest Pro Q4 installer from February 2025.
Honestly, I experienced Pro Q4 latency issues in Pro Tools which cost me a huge amount of time to solve.
Now, similar issues in reaper. I can't help but feel like a beta tester.
Thomas Gassmann — Jul 15, 2025
Hi Thomas,
Would you be able to send us a short video of automating the Dynamic Range with the CLAP version of Pro-Q 4? Please send it to info@fabfilter.com and we'll have a look.
As for Pro-Q 4 latency this often seems related to people using/enabling spectral processing on a band. The latency introduced by linear phase processing depends on the chosen resolution of your settings. Could it be related to Spectral bands in your case? If not, could you elaborate on the issue?
Thanks!