Before you can adjust the speed of the Ambilight response, you need to set the Ambilight colour mode to Dynamic.
Proceed as follows:
- Press the [Home] button on the remote control to access [Setup] > [TV setting] > [Ambilight] > [Colour] and set to [Dynamic]
- After you have set the colour mode to [Dynamic], you will be able to adjust the speed of the Ambilight response in the Menu [Setup] > [TV setting] > [Ambilight] > [Dynamic]. Alternatively, press the [Adjust] button on your remote control to access the Experience bar Menu and select [Ambilight dynamic]
Note: In order to update the TV default settings after you perform a Factory reset in the TV Menu, we advise you to update the TV's software to the latest version on the Philips support website. Refer to the SOFTWARE and DRIVERS section.