FYI this issue sounds similar to my experience, posted today: Guitar input does not work (sometimes)
Note that I have never seen the input cut out while playing… the profiler is (so far) either fully working or having a dead input at startup.
I’m curious to know if you ever see the issue when you are playing the guitar a bit when it starts up? It could be luck, but I never see the issue when I make sure there is a signal coming from the guitar at startup.
Never tried that, its worth a try. Thanks