The edge-lit local dimming feature is terrible, and it's always on in HDR, as you can't deactivate it. While most content requires all 16 dimming zones to turn on, dark scenes with small, bright highlights result in a ton of blooming as only certain zones turn on. It's especially noticeable with bigger subtitles, but some small subtitles don't always trigger any zones to turn on, which is good as there's less blooming. The algorithm keeps up with fast-moving objects better than other edge-lit monitors, but it's still visible when an object transitions between zones. Overall, the local dimming fails to improve the contrast, and it worsens the picture quality in HDR, especially in dark scenes.

The monitor has an issue where the local dimming feature doesn't turn on when using an AMD graphics card over HDMI. A user reported this, and we confirmed with our RX 6600 XT that local dimming doesn't turn on over HDMI. However, it still works over DisplayPort, or even when using an Xbox Series X|S, so it's unclear if it's an issue with the RX 6600 XT or all AMD graphics cards.