If the error started after a recent update, try reverting to a driver version from 2-3 months ago. 4. Disable Overlays and Third-Party Tools
Right-click RDR2 > Properties > Local Files > Verify integrity of game files .
Delete all files starting with (e.g., sga_vulkan_final_init.vk_pipeline_cache_vk ). errgfxd3dshader1 work
Misalignment between the game's API settings and your hardware.
Graphics cards lacking the necessary instructions for the game's engine. If the error started after a recent update,
Corrupted installation files can prevent shaders from loading.
Settings > My installed games > RDR2 > Verify Integrity . Article Summary Table Potential Fix Shader Cache Delete sga_ files in the Settings folder. Graphics API Toggle between Vulkan and DX12. Hardware Disable GPU overclocking/undervolting. Software Disable overlays (Discord, Steam, GeForce Experience). Delete all files starting with (e
Use Display Driver Uninstaller (DDU) to completely remove old drivers before installing the latest version from NVIDIA or AMD.
D3D errors are often triggered by software that "hooks" into the graphics pipeline. Try disabling: Steam/Discord Overlays. MSI Afterburner or RivaTuner Statistics Server. Performance monitoring software.