The Witcher 3 Remastered patch 5.00b (released 28 Sep 2026) hangs on a black screen under CrossOver 26.3 / D3DMetal 3.0. This fix gets it to the main menu at 60 fps on an M1 Pro.

1. CrossOver redirects the game to a folder that doesn't exist. CrossOver has a built-in tweak that swaps bin\x64_dx12\witcher3.exe for bin\x64\witcher3.exe, the old DX11 build. Patch 5.00b is DX12-only and no longer ships bin\x64, so the game fails to launch ("Path not found").
2. D3DMetal crashes on one pipeline. During startup the game creates a single stream-output graphics pipeline (geometry shader, no pixel shader). Compiling it crashes Apple's shader converter (libmetalirconverter.dylib). The game's crash handler then deadlocks, which leaves you with a black window at 100% CPU.

• Adds a symlink bin/x64 → x64_dx12 so CrossOver's redirect lands on the real DX12 build.
• Replaces amd_fidelityfx_loader_dx12.dll with a small proxy. The original is kept as amd_fidelityfx_loader_dx12_orig.dll and every FidelityFX call is forwarded to it unchanged. The proxy also hooks the game's D3D12 device and refuses stream-output pipelines before they reach D3DMetal. The game continues without that pipeline.
• Marks the game as DPI-aware at startup. Otherwise, with CrossOver's High Resolution Mode on, the game only sees a half-size virtual screen and tops out at 1512×982 on a 14" MacBook Pro. With this, resolutions like 1920×1200 or the full native size show up. Mac screens are 16:10, so choose 1920×1200 rather than 1920×1080.

Nothing else in the game is modified, and the proxy makes no network access.

1. Download this repo (Code → Download ZIP) and unzip it.

2. Double-click install.command. If macOS blocks it, right-click → Open. It looks for the game in:

   • every CrossOver bottle (GOG, Steam, EA...), including extra drive letters the bottle maps,
   • Steam library folders listed in Steam's own config, even on other drives,
   • external drives under /Volumes.

   If it still can't find the game, it asks you to drag the game folder into the window. The game folder, its bin folder, or witcher3.exe all work. You can also pass the path in Terminal: ./install.command "/Volumes/MyDrive/SteamLibrary/steamapps/common/The Witcher 3"

3. Launch the game as usual.

External drives work, including exFAT. If a drive can't store the bin/x64 link, the installer copies the folder instead (about 650 MB) and refreshes that copy each time you run it.

Recommended in-game settings: turn off HDR and NVIDIA DLSS/Reflex, and use FXAA or TAA for anti-aliasing. FSR is untested.

After a game update or "Verify files", run install.command again. The launcher restores the original DLL.

Double-click uninstall.command. It restores the original DLL and removes the bin/x64 link, or the copy. It searches the same places as the installer and also accepts a dragged folder.

• Tested on: M1 Pro, macOS 26, CrossOver 26.3, GOG version 5.00b. Steam should work the same way but hasn't been tested.
• The refused pipeline may mean a visual effect is missing in-game.
• A log is written to drive_c/users/crossover/ffxproxy.log inside the bottle.

The DLL is built from ffxproxy.c (single file, no dependencies) with Zig as the cross-compiler:

python3 -m venv venv && venv/bin/pip install ziglang
venv/bin/python -m ziglang cc -target x86_64-windows-gnu -shared -O2 -o amd_fidelityfx_loader_dx12.dll ffxproxy.c

SHA-256 of the released DLL: 46862167d7471bd41deee3edb11665b3dcecc86f20fe4ddcd666764cefe1827a

Optional environment variables: FFXPROXY_DUMP=1 dumps shaders to %USERPROFILE%\ffxdump, FFXPROXY_STUB_FSR=1 gives FSR a dummy context, and FFXPROXY_NO_DPI=1 turns off the DPI-awareness change.

MIT. Not affiliated with CD PROJEKT RED, CodeWeavers, Apple or AMD.