There are options for BinPackArguments and BinPackParameters, but no corresponding BinPackArrays option.
Instead, they automatically start bin-packing at 20 elements.
This seems like a strange decision and seems even more strange that there is no way to disable it.
I feel like this should either have it's own option, or should just always respect the BinPackArguments option, no matter how long the list.
Since the latter seems like an easier solution, I've just done that for now. If you think this would be better off with its own option, I'm happy to do that instead.