The game doesn't support full-screen or 1440p resolution.
The game doesn't support full-screen or 1440p resolution.
You're experiencing issues with Red Dead Redemption 2 not running at higher resolutions or in fullscreen. Many users report similar problems, and it seems inconsistent across platforms. Rockstar Launcher and GeForce Experience both offer optimization options, but the settings don't always stick. Check if your graphics drivers are up to date and consider testing on a different PC if possible.
He likely adjusted the graphics settings from Vulkan to DX12, which resolved the issue.