Steam's CEF UI intermittently crashed its GPU child (exit_code=8704) on
NVIDIA+Wayland, falling back to CPU rendering and making Big Picture a
slideshow at 4K/HiDPI. Bake -cef-disable-gpu-sandbox into every steam
invocation via extraArgs so it covers all entry points (desktop, CLI,
Sunshine's Big Picture tile) — launch flags only apply on the invocation
that first starts Steam.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Miguel Palhas
4d4f9a0b5e