Shadow of Chernobyl has a hard-coded 60 FPS limit due to its physics engine. To unlock it (at your own risk):
Navigate to the official Fitgirl Repacks site (ensure it is the correct .site or .com domain, as many fakes exist). Locate the Shadow of Chernobyl repack. Use a torrent client (like qBittorrent or Transmission) for the fastest speeds, as direct links often have download limits. Stalker - Shadow Of Chernobyl Fitgirl Repack
Not all repacks are created equal. When you download the official repack from Fitgirl’s verified site (or trusted proxies), you typically get the following feature set: Shadow of Chernobyl has a hard-coded 60 FPS
If you have a modern monitor (1920x1080 or higher), the UI and HUD will look stretched or cut off. Stalker - Shadow Of Chernobyl Fitgirl Repack