In the landscape of modern PC gaming, a patch number is rarely just a sequence of digits; it is a post-launch manifesto. For Horizon Forbidden West, the arrival of Update 1.037—closely tied to the executable file version 1.580.0.exe—represents a critical evolution in the game’s lifecycle. More than a simple bug fix, this update embodies a proprietary, "exclusive" approach to performance tuning. It signifies a departure from generic stability patches toward a surgical recalibration of the game’s rendering pipeline, memory management, and CPU/GPU affinity. By analyzing the technical weight carried by this specific executable, one can argue that Update 1.037 is not merely an improvement but a necessary re-engineering of the game’s identity on the PC platform.
The r/HorizonPC subreddit is split. Here is the final consensus after two months of testing Update 1037.
The patch notes vaguely mention “improved environmental anisotropic filtering.” Lies. What they actually did is enable hardware-accelerated ray-traced Caustics for underwater areas – no toggle, just always on. Swimming through the reefs near the Isle of Spires now produces shimmering light patterns that reflect off Aloy’s spear and the fish. It’s stunning. It also drops performance by 12% if you’re on a 3080 or lower. My 4090 didn’t flinch. horizon forbidden west update 1037 1580exe exclusive
Also, they added variable rate shading (VRS) 2.0 but hid it behind a registry key. When enabled, distant machine patrols render at half-res shading, saving 8-10% GPU load with no visible loss. Why hide this? No idea.
The keyword “exclusive” has caused confusion. Does Update 1037 + 1580exe unlock exclusive gear? No. However, it does unlock an exclusive graphics setting invisible to standard users. What it does: This is a DirectX 12
When 1580exe is active, a new menu option appears in Settings > Graphics > Advanced called: “Geometry Micromap (OMM) – Ultra.”
So, while you don't get a new bow, you get an exclusive performance headroom that effectively allows for native 4K/120Hz on a 4090 without Frame Gen artifacts. So, while you don't get a new bow,
Industry insiders suggest that the 1580exe exclusive architecture is a testbed for Horizon 3 and the rumored Marvel’s Wolverine PC port. The ability to offload compilation to a separate CPU thread via a dedicated executable is a massive philosophical shift.
Expect to see similar "helper EXEs" in future Sony ports. The 1037 update is, therefore, not just a patch for Forbidden West—it is a prototype for DirectX 13’s Multi-Process Rendering.