Precut and lubed patches is an in between load process that's neither slow nor fast.
Mostly, consistency has been the benefit that I enjoyed with pre cut patches. Patches allow for the same size piece of cloth going down the barrel each time.
One the other hand, pre cut patches can be awkward, especially when loading from the bag. Open the tin, grab a patch without spilling the others. oop. Now those two are stuck together . . . AND I dropped the patch.
The goal is consistency and simplicity. Speed will follow.