Even clearing the buffer doesn’t help much for me. Sometimes it does but at least as often it doesn’t, and they always come back. And again, this happens even with no inputs and the gate threshold pushed WAY above the self-noise floor, so all that is being recorded is a bunch of zeroes (right up until the last millisecon or so, where there’s a bunch of DC suddenly, and it causes a click). It doesn’t always hit right away but it hits sooner or later (and not much later, at that).
Anyway, I’m definitely not arguing with your experiences with PUM clicks or anything, just trying to be totally clear about what I’m describing.