In Steam, right click on The Evil Within and select “properties” then under the General tab, hit “set launch options.”
Put this in to unlock the console: +com_allowconsole 1
Once the game has launched, hit the Insert key to bring down the developer console.
Framerate first. Open up the in-game console and type “R_swapinterval” (without the quotation marks). Follow this up with either -2, -1, or 0.
R_swapinterval -2 is the default, locking the framerate to 30FPS. R_swapinterval -1 sets the FPS limit to 60, although be warned that “there may be quirks”, which Bethesda is promising to fix. Finally, R_swapinterval 0 will fully remove the framerate limitations – but this will likely cause a lot of issues, and Bethesda has absolutely no intention of fixing these.