i'm pretty sure that's the FPS range that DF said the highest frame rate mode seems to dwell in most of of the time.
I still haven't had a chance to start, maybe tonight or tomorrow at the latest. I'm seeing some reviewers say the game took 28 hours, and some say 55 hours! I think the high ends are for completionists, but that's quite the discrepancy! IGN was saying that if you're one of those collectibles completionists, not to worry too much about it until you finish the game. Apparently there are a bunch you will never be able to get to until the main story is complete, so not to spend too much time on them. I'm glad I heard that, there are games I rage quit due to spending hours trying to solve puzzles only to find out they were unsolvable until I played futher into the story.