NFS Rivals glitchy human players when running game at 60 fps?

I enabled the game to run at 60 fps using a game command prompt in Origin, but I noticed other online players' cars look rather shaky and flickering. I just purchased the game, so I don't know if it only happens when the game is forced at 60 fps or if it happens even in default settings. I'm running the game smoothly with all settings maxed and Origin-In-Game disabled. Is this an Autodrive glitch or an issue with the video drivers? (I'm running 344.16 WHQL.)