Sorry for the delay -- here is a log; the timestamp at 2018/03/26 01:46:39 is the beginning of pdftex running.https://pastebin.com/TJdfUdfr
It may be to do with the files being busy as pdflatex runs.
Is the debounce implemented per-file? Directory? Profile?
tex2pdf will spit out all of those files in a fraction of a second, even a 2 second delay should mean they all go at once.