There were/are some issues with the M1 chip and Ventura. Also, Logic broke the 3rd party MIDI FX in an update and haven’t fixed that yet. At one point running under Rosetta helped some people having problems with Scaler and M1. There are many threads about it here. here is one -
So is the sound coming from Serum then? Scaler to Serum? If you mute Serum does the sound stop?