@BryantP
Just discovered something interesting. Had another dropout after updating everything to latest firmware on the FM3 and Edit. It was a purchased preset from the Austinbuddy pack using the Hook 3B model with the Stereo Tape Delay engaged. This particular preset did have control switch modifiers on the amp's input boost, cut, fat, bright switch, and saturation but the only one in the on position was the bright switch. This particular preset was with the Hook No Edge tonestack chosen as the tonestack type. After a few seconds, the whole thing cut out until the unit was restarted. I removed the modifier/control switches for the saturation, fat and bright switch and then played for a while with no dropout.
Now here is where it gets interesting. I then went to another of Austinbuddy's presets that was the same Hook 3B but this one is with the Hook Edge tonestack instead of No Edge. All the same original modifiers as well as the delay were on just like in the other preset. Played for a while without any dropout at all. Then, just for the hell of it changed the tonestack to Hook No Edge and within a few seconds the dropout was there again. So obviously something within that tonestack made everything unstable.
Since these are purchased presets, I am not posting them but would think you should be able to get the same results if you try or I can send them just to you in a PM if needed.