This is a WIP mod.
It's not balanced, it's more of a tech demo at the moment for different belt tiers in the game engine.
Miniloader is not supported currently, it will not generate any entities capable of speeds that can use these belts.
Vanilla loaders, Optera loaders, Deadlock loaders, all cap out at a hard 120/sec due to the loader entity prototype limits.
In order to make best use of these belts without miniloader or inserters quick enough to chase them, your main option is to use them as an aggregate trunk.
Combine many slower belts into one very fast belt, and then break it off using a fast splitter onto a slow belt for inserters to make use of.
It's not that slower miniloaders won't work with these belts, it's just a waste.