According to Bethesda the game's been specifically designed by Mikami and his team to be played at 30FPS with an aspect ratio of 2.35:1 (letterboxed) - they recommend sticking to those set markers "for the best experience".
"Shinji Mikami and the team at Tango designed The Evil Within to be played at 30fps and to utilize an aspect ratio of 2.35:1 for all platforms," the developer announced on the game's forums. "The team has worked the last four years perfecting the game experience with these settings in mind. For PC players, we’ll provide debug commands on how you can alter the framerate and aspect ratio, but these commands and changes are not recommended or supported and we suggest everyone play the game as it was designed and intended for the best experience."
As for the hefty 4GB of VRAM required to run the game, Bethesda says that's due to a simultaneous development on current-gen consoles and PC. “The PS4 and Xbox One both have 8 GB of unified RAM which can be used as both system and video memory. Because our PC version is functionally identical to those platforms, we recommend 4 GB of system memory, and 4 GB of VRAM for the best experience.”
You can remove the frame-rate cap and letterboxing manually with a console command that the studio will provide at launch, but Bethesda warn this is "not supported" and may cause issues.
The Evil Within launches this October 14. You can check out the minimum .