@uncloned:
when the drum loop (or any other sound in fact) is in sample form, the pitch and the time length won't shift with tick/row/tempo change, basically will sound the same no matter what will you do.
So in his example, the tick/row was 6 and when he just coudn't make the fast slice changes on that speed, someplace just switched it to 3 and the tick went on with double speed. That meant double precision, but naturally the pattern length is needed to be doubled from from 32 to 64 to be able to fit every note.
About the same effect could be archived with double bpm, and maybe he could do the same on constant tick/row, but with delay (SDx) and another channel involved.
I hope this could make a sense for you. It is quite a "basic" "techonogy" for me also, as Jojo stated, but will help naturally if things are not clear.