Сhanging speed of belts. Every next belt tier has twice higher speed than tier before. Now splitter splits one blue belt to two red belts.
Bob's adds miniloaders for his Turbo and Ultimate belts, if you have miniloaders. Your mod does not modify them at all, so they are much slower than the belt they are supposed to be with.
Which mod adds them?
Miniloader adds it, if Bob's logistics is active.