Recording happens in "hiccups" at "clicks",

Hi all, I’m new and I’m just learning how to use Ardor, I’m using a Raspberry pi4, I’m trying to record guitar and voice, I’m using a sound card connected to Raspberry, I can record but the recording happens in “hiccups” at “clicks”, I also received a message about an IN/OUT problem, could it be that the Raspberry is not powerful enough to use Ardor? Or am I doing some setting wrong?
My only need is to be able to record the guitar or the voice, with a base underneath, and do it in such a way that an acceptable result is obtained.
Can you help me?
Thank you all