Issues with Line 6 UX2 soundcard

Hi I have issues with my Line 6 UX2 sound card. It used to work fine, but now when I play for more than 1 or 2 minutes on guitar through podfarm, it suddenly crashes. The orange dots light up on the sound card, and the last guitar note I was playing when it crashed just keeps repeating in a robotic ongoing way - it cannot play spotify songs, or youtube sound, guitar sound or anything afterwards, the robotic sound just keeps repeating until I unplug the soundcard then it stops. I trie

I got this issue after upgrading to Catalina (10.15.5) on an older macbook pro (15 inch, early 2013), i'm telling you this because on new macbook pro (16 inch, 2019) there's no issue at all!!! After one month or more of trial and test, yesterday i think i found a workaround. (i still hope for un update of the driver) The point is to use UX2 only for the input and use the mac headphone plug for the output. 1) In System Preferences/Sound, I set up as Output the Headpho