Mafia 3 is locked at 30fps on PC, much to Steam users' chagrin
http://www.eurogamer.net/articles/2016-10-07-mafia-3-is-locked-at-30fps-on-pc-much-to-steam-users-chagrin
This isn't the only reason users are knocking it, as some complained about crashes, glitches and the game not looking as good...