We already turned off HDMI, Wifi, Bluetooth, LEDs and several processes earlier.
The idea is to get rid of any potential unnecessary distraction to the audio job.
Today we're looking at how to control our USB ports including the ethernet port.
(The PI ethernet port is basically an integrated USB dongle.)
The PI, actually all PIs, come with a major bottleneck.
Just a ""single"" USB 2.0 pipe is used into the SOC (main CPU chip) for all USB ports incl. ethernet. All of them get routed over that single pipe.
That's what I'd call a major bottleneck.
There a now two tweak options I'd like to suggest.