Errgfxd3dshader1 Best 'link' -

: Ensure your PC is using your dedicated GPU. In Windows, go to Settings > System > Display > Graphics , find your game's .exe , and set it to High Performance .

Disable hardware acceleration:

that occurs when the game cannot properly communicate with your graphics card via Direct3D. This typically points to a conflict between the game settings, your GPU drivers, or unstable hardware clock speeds. Core Troubleshooting Steps [Fixed] ERR_GFX_D3D_INIT in GTA V - Driver Easy errgfxd3dshader1 best