Sheldon Axler writes in LADR that (something along the lines) "if you're reading faster than a page a minute, you're probably going too fast."
I'm now an undergraduate, and I can attest that, yes, to fully understand a page in my texts, it takes about that much time (40 minutes to an hour). It would be reassuring to know if with more maturity, this rate drops or that the expectation to pick up material increases in grad school. Is this so?