@marcan@treehouse.systems
I dealt with this before and created https://github.com/DISTRHO/Zinc just to deal with sample-accurate audio monitoring/recording when using OBS and JACK.
The audio plugin hosting I did for OBS was rejected in the end, so the usefulness of these plugins is minimal unless you manually build from https://github.com/falkTX/obs-studio/tree/carla-v3