Federally, yes, it's five hours.
I haven't experienced it to be a particular problem. Now, as an experienced user of the Access to Information Act, I know how to narrow down what I am looking for, so it generally doesn't take five hours. I work with the ATIP officers to ensure that it is narrow. I don't want to be getting thousands of pages of documents, because I have to go through them. I think having some limit is reasonable.