Forza Horizon 6 Unofficial AMD Compatibility Patch Mod v1.2

                    
Forza Horizon 6 blocks unsupported AMD hardware at launch, which leaves some APUs and older Radeon GPUs stuck behind a compatibility check before the game even starts. The Unofficial AMD Compatibility Patch mod bypasses that restriction with a D3D12 and DXGI hook setup that also fixes launch crashes tied to VRAM reporting and shader feature checks. Furthermore, it targets the exact problem areas that affect Vega, Polaris, and similar AMD hardware. Consequently, the game can reach the main menu on systems that would normally fail at startup.
What’s Included

Bypasses the hardware validation that blocks unsupported AMD devices.
Fixes the VRAM_BUDGET: 0 issue on APUs and improves DXGI and D3D12 memory reporting.
Spofs support for Shader Model 6.6 and Enhanced Barriers.
Designed for AMD Vega, Radeon Graphics, Polaris, and similar older AMD hardware.
Improves launch stability by preventing repeated vtable re-patching after the first hook.

Why You Need This Mod
If Forza Horizon 6 refuses to launch on your AMD hardware, this patch gives you a way past the compatibility block without replacing your entire system. It also helps systems that report unusable VRAM or fail the shader check even when they could still run the game. Additionally, the mod focuses on launch stability rather than performance tuning, so it solves the startup problem first and leaves gameplay intact.
How to Get Started

Download the mod archive and extract it to your PC.
Open your Forza Horizon 6 installation folder, where the game executable is stored.
Copy the included d3d12.dll and dxgi.dll files into the main game directory.
Launch Forza Horizon 6. The first startup may show a black screen or crash while shaders and cache data initialize.
If that happens, restart the game and try again.
To uninstall, delete the added d3d12.dll and dxgi.dll files from the game directory.

Good to Know

This patch is intended for unsupported AMD integrated graphics and older Radeon hardware. It is not a universal fix for all GPUs.
You need AMD Software: Adrenalin Edition with DirectX 12 Agility support, version 23.10.01.14 or newer, for the fix to work correctly.
If you use an APU, the author recommends at least 16 GB of RAM, with 20 GB or more preferred because the game uses shared memory.