Latency with TV (lip sync)

Game mode and the HDMI 2.1 connection deliver positional audio with no noticeable lag, keeping sound tightly synced to on screen action for both casual and competitive play.

Reviews note that TV audio remains well synchronized with video, and KEF’s quoted sub-6ms processing delay appears inaudible in practice, with dialogue-heavy shows and movies avoiding noticeable lip-sync problems even when the speakers are linked wirelessly.

Reviewers report that latency is low enough that lip-sync is not a problem when watching videos on a phone or tablet, making the Flex 2 usable for casual video viewing over Bluetooth.