| Issue | Likely Cause | Fix | | :--- | :--- | :--- | | | Missing Visual C++ Redistributables or Vulkan runtime. | Install latest VC++ (2015-2022) and VulkanRT from Microsoft. | | "Failed to read save data" | Rev patch applied incorrectly. | Delete the saved_games folder in Documents\My Games\Doom Eternal\base and let the game recreate it. | | Horde Mode greyed out | DLC unlocker not run. | Re-run the unlocker .bat file as Administrator. | | No audio during cutscenes | Conflicting audio codec. | Set Windows audio format to 24-bit, 48000 Hz (Studio quality). | | Textures look blurry | Dynamic Resolution Scaling stuck. | Open Console (press ~ ), type r_dynamicRes 0 . |