Hello!
I am using PiPedal and a friend of mine Is using It too since a few weeks.
I think It Is a really good project really well optimized.
I use a RPi5 8gb but I am choosing which audio Interface I Will use.
I started with a PiSound (RPi HAT) and then tried many different Audio Interface looking for the best RTL + Sound.
@tauzero that Is not RTL. That's the latency generated when processing the signal (Sample Rate + Buffer).
You have to had the audio Interface latency to convert the signal AD/DA.
I sold everything from my pedalboard and kept just a Polytune (tuner + buffer) and added the RPi (with the audio Interface) with a MVAVE Chocolate plus.