The game is hardcoded to 4:3. Forcing widescreen stretches 3D models. Recommendation: Play in windowed mode or set your GPU scaling to “maintain aspect ratio.”
If you ever tried to run the original 1998 Virgin Interactive PC release of Resident Evil on Windows XP, Vista, or Windows 10, you were likely met with a dreaded error: Kernel32.dll. biohazard 1 sourcenext
The original code for the PC port was notoriously finicky. It relied on specific, outdated drivers (like old DirectX 5/6 components and specific video overlay modes) that newer Windows versions immediately rejected. The game is hardcoded to 4:3
For years, the SourceNext version was highly coveted specifically because it included an executable that was compiled later. This meant it ran on Windows XP without crashing. In the days before easy patching tools, owning the SourceNext disc meant you didn't have to hack your game files just to see the title screen. The original code for the PC port was notoriously finicky
(Remapping requires editing BH.INI or using AutoHotkey.)