Tone King Imperial MKII breaking up, tuner doesn't work. What am I doing wrong?

I downloaded Tone King Imperial MKII a couple days ago.

It is likely operator error, but it sounds pretty bad, and the tuner doesn’t work.

I’m using a good cable and have adjusted input gain, but it still sounds pretty bad.

My chain is:

Guitar → Fireface UC → Logic Pro running on a mac studio

Thanks for any advice!

Have a look at this recent thread:

I turned the input level of the audio interface to its minimum setting, and I’m running a new mac studio and it’s not breaking a sweat with this (under 10% utilization).