There are 2 priests where I go to Mass who speed through it. It’s not possible to follow along with the missal. I’m not in any position of influence or authority, and I don’t really know or speak to these priests personally.
I COULD bring it up to another priest who actually is in authority in the place but I don’t know if I should.
Is this Sunday Mass they speed through or Daily Mass? Is there a lot of people at Mass or just a few?
I would ask the 2 priests directly if possible, if not, talk to the one with the authority. Not that he will actually do anything about it, although he might, but I would not be afraid to ask. Either way, it's not likely going to change anything and you may end up simply trying to follow as best as you can.
If you decide to ask, maybe you could phrase it something like this:
Father, I am slow at everything, including praying my Mass prayers and am having trouble following along with Fr. "X," and am missing a lot of prayers, can you suggest a way for me to follow better?