The best setting for Deep Color (v2.1): 1、The deep color effect from the best to Worst: RGB444 10bit Ycbcr444 10bit RGB444 8bit Ycbcr444 8bit Ycbcr422 Ycbcr420 10bit(only available under 4K50/60Hz) Ycbcr420 8bit(only available under 4K50/60Hz) Please try every setting one by one, and find the best setting for your equipment. 2、In case of HDMI 2.0 specification and equipment limited, which will be only supported Ycbcr420 with 4K@50/60Hz, no options for other setting. 3、Suggestion: if your TV suport 1080P, please choose RGB444 10bit / Ycbcr444 10bit if your TV support 4K 24/25/30Hz,please choose Ycbcr422 if your TV support 4K 50/60Hz,please choose Ycbcr420 10bit,but most of them support Ycbcr420 8bit; All above info is the suggestions from our manufacturer, please try and get the best setting based on your equipments.