All I am doing is playing my guitar through gearbox, plugged into a UX1. It pops every 10 effing seconds. Turning up latency helps, but I don't want to turn it up because it's delayed.
Epiphone Les Paul Standard
Fender MIM Standard Strat
Fender Deluxe Reverb
Digitech Bad Monkey
Electro Harmonix Big Muff
Ernie Ball VP Junior 250k
Dunlop Cry Baby Wah
are you near anything heavily conducting electricity? I find I get rhythmic popping when im too close to my laptop power supply.