We have released a Day One Patch that added the option to turn off Upscaling.
Please completely close Steam and then restart Steam to ensure you have the latest update.
Our team is working on adding the option to disable Upscaling in the settings.
There is a workaround you can use while the team works on adding the option.
- Go to settings in the game menu
- Select Graphics
- Set Upscaler to “Windows”
- Set Resolution Quality to “Quality”
- Set Maximum Resolution to “Ultra (4K)”