Hi guys! I've been experiencing crackling and popping noises since I've updated my firmware to 2.20. I initially thought that the problem was a result of faulty accessories (i.e. cables, batteries for pickups, headphones, etc), albeit, I've tested my Helix with multiple guitars and basses through all new appurtenances in multiple environments yet the issue still remains. After experimentation within the unit I noticed that the problem only occurs when an amp or effect block is engaged. The signal is still processed but the noises are conspicuous in the background when playing opening chords and audibly apparent when when palm muting. Has anyone else experienced this before I have my Helix sent in for repairs? I can upload a sound sample once I get home from work if need be.