Ok you posted your thread brands and needle sizes, but you need to make sure your thread size is compatible with your needle size. For instance, if you're using a 40 wt thread, which is fairly thick, with a size 8 or 10 needle, you will most likely get shredding and breakage because that needle is way too small for that thread.
I think these links will be very informative for you.
https://www.superiorthreads.com/educ...e-right-needle
https://www.superiorthreads.com/educ...read-shredding