Performance Concerns

I'm trying to make a view with the following language priorities:
current,en,fr,nl,pt

This is causing views to add 4+ subselects onto the query. I'm concerned about performance, as I can't really cache a lot of these views which have exposed filters/search terms and these subselect seem inefficient. I have few ideas of how I can do this kind of fallback with a new custom module, but I'm wondering if anybody's found an elegant solution.