This guy shows that the issue is actually broader than poor performance and can be generalized to excessive swap on boot disk use, and that’s even with swappiness set to 1
Along with that, when you begin to include excess boot disk load, this guy found that his m.2 boot disk was seeing so much excess load (with dragon fish beta as it turns out) that he had to put a heatsink on it!
And this guy found swap perf so bad under dragonfish he disabled it.