Like Portal with RTX, Portal: Prelude RTX is fully ray traced, meaning it is very GPU intensive. Before playing Portal: Prelude RTX, please ensure your system matches or exceeds the requirements for CPU and RAM, for the best possible experience:

For GPUs outside the minimum spec, and between minimum and recommended (i.e. some GeForce RTX 20 and 30 Series GPUs), the easiest path to better performance is to use GeForce Experience[www.nvidia.com]. Simply download our latest Game Ready Driver, locate Portal: Prelude RTX in the list of detected games, and click “Optimize” to automatically configure the best combination of image quality and performance settings for your GeForce RTX 20 or 30 Series GPU.

Based on our testing, GeForce RTX 2060 users can play at over 30 FPS+ at the Low Preset using DLSS Ultra Performance Mode, while GeForce RTX 3080 users can run at 60 FPS or more at 1920x1080 using the High Preset and DLSS Quality Mode.

If you prefer to configure settings manually, we have prepared a recommended graphic settings chart to help guide you to higher frame rates at 1080p, 1440p, and 4K:

To adjust these settings in-game, press Alt-X to open the Remix graphics window

Please note, performance will vary depending on your system configuration, and some options may reduce visual quality, though these settings do target a smooth 60 FPS experience. To adjust these settings, remember to press Alt-X to use the Remix graphics settings window.