What exactly is HDR10+ GAMING and how is it different from regular HDR gaming?

Regular HDR gaming has to pick default HDR values, which may not work well for your gaming display. The game developer does their best to determine how the image should be rendered by default, but they must make their game look acceptable on a wide range of displays so they have to make compromises. As a result, if your display is significantly brighter or dimmer than the target brightness settings decided by the developer, the game may not look as intended.

HDR10+ GAMING adds real-time, two-way communication. The game engine learns the exact capabilities of your display, such as its peak brightness, and renders the image precisely for that screen. It works on the game engine, through the GPU and automatically switches the display into HDR10+ GAMING mode, allowing the display to present the image exactly as it is received.

In plain terms:

Standard HDR10: Game developers make a best guess on default settings. Results vary wildly.

HDR10+ GAMING: Your game engine knows your display’s exact specs and renders accordingly. Then tells your display to go into HDR10+ GAMING mode. What you see matches the developer’s vision.