Yes, I get a clear image on screen with 1.4 or 2.2, so should you, you shouldn't need to calibrate to see an image, that's why I'm thinking maybe your input 3 (the 2.2 HDCP one) is dodgy
ive decided to use 2160p 60Hz with UHD activated on input 2 this gives me HDCP 1.4 and my resolution is RGB with full colour - this set up is the best in my opinion. Switching to input 3 gives me HDCP 2.2 but at YUV resolution