While Forza Motorsport 5 looks effortlessly beautiful running in glorious 1080p with a rock solid 60fps, its next-gen rivals are lagging behind when it comes to frame rate.
DriveClub struggled to stay at 30fps when we last played it (although it's currently undergoing some extra fine-tuning following its delay, so we remain hopeful that it will run at 60fps when it's released next year), and launch title Need for Speed: Rivals has been locked to 30fps. It's not uncommon for launch titles to be constrained like this however, particularly in the case of Rivals as it's been cross-developed for current-gen platforms as well, so the developers were unable to fully utilise the new next-gen hardware.
For the PC version, the frame rate was meant to be unrestricted as we were originally led to believe, allowing PC players to experience an enhanced sense of speed in 60fps. Since its release however, players are starting to discover that the PC version is in fact locked at 30fps. Attempts to unlock it and and play NFS: Rivals in 60 fps results in something like this:
Yes, what you're seeing here is NFS: Rivals' interpreting 60fps to be double speed, completely breaking the physics in the process.
EA Ghost deliberately locked the console game to 30fps in order to preserve its 1080p resolution and advanced AllDrive which seamlessly merges online and offline playability. Powerful PCs, on the other hand, should easily be able to cope with the strain.
Unfortunately, there's only one conclusion we can draw from this: clearly, NFS: Rivals on PC is a lazy direct port of the console game. Shame.