I’m not an expert on this, but I’ve never seen anyone double-escape at above 150ish BPM 16th who doesnt swipe a lot. They may have certain ‘comfort zone’ patterns where they can avoid it, but true ‘pick-anything’ non-swiping at high speeds still seems illusive.
From what I can gather, M. Miller, Molly Tuttle, Andy Wood are at the upper-edge of this limit. Maybe I’m wrong, but I have’t seen them go beyond 150ish with their pristine forms.
For me, my non-swiping zone is around 140 bpm. I can occasionally get up to 160 without swiping, but only if its a ‘comfort zone’ pattern.
But a little swiping is ok. And I continue to practice in these higher speeds as part of my practice routine.