Hello I just bought a CAC-1085 and a 6.5 ft officially certified HDMI 2.1 cable. I am using a Radeon 5700XT and a LG CX 48″ OLED.
When using the adapter the display is being connected at the same speed as the HDMI port directly on the GPU. The adapter is only doing HDMI 2.0b. I can do 120hz but it goes to 8 bit 4:2:0. This is the same exact thing I get if I just plug the hdmi right into the gpu.
How do I fix this? I tried a 10 ft officially certified cable and it didn’t work then I saw the manual says to use one under 6.6 so I bought this cable and it is also not working. Should I try a 3 foot cable?
I know for a fact this works I have seen many people say this exact set of hardware works. I read something about using CRU(custom resolution utility) to force the tv to use 4:4:4 because it’s just an identification problem?
Please help there is absolutely no way to buy a HDMI 2.1 graphics card, there hasn’t been even one in stock for even one minute in the last 6 months I check all the time and besides I love this gpu, and I cannot return my display which cost $1400. I only bought it because I found your adapter.