I only had an hour or so last night and was trying to slice two loops, but couldn't do it.
(I got distracted by messing about with the start point of the samples instead and seeing what happened instead of actually importing mono samples and trying

I was getting an error which said "cannot slice" (or something like that). No options to adjust the sensitivity or anything else, so i think I'm doing something wrong somewhere.
The manual has about five words that I saw on the topic.
Section 3 - editing a sample
"• Time Slice: Divides the sample by beats."