What you're saying is over my head. I've been using these presets for several months and never had that happen until the recent upgrades. I went from 17 to 19.05 in the space of a couple of days last week. AFAIK, the problem showed up Saturday, after I'd moved from 19.04 to 19.05. On most of them, right after the input, I have a compressor that's rarely used, so I wouldn't think it was that. Next is either Phaser (Vibe), Tremolo or Wah (auto wah), then a drive. I'd venture to guess that none of these effects were on when the pops happened. I don't have your understanding of this stuff, so I'm telling you all of that in case it helps you to help me what caused it. Unless the bypassed effects listed might be the problem, 90% of the time the amp is the first thing in the chain.