Hi, I am new to this community.
I got a used Radeon VII today. Everything works great, but I can't seem to get 8K30 to display on my LG 75SM9900PLA 8K LCD TV over HDMI. It works with the 2080 Super I exchanged for the Radeon, but I could not get any resolution higher than 4096 x 2160 to be available for the latter.
System: AMD Ryzen 7 3700X with Radeon VII connected over a high quality Club 3D CAC-1372 HDMI 2.1 cable. I know the Radeon only has 2.0b, but as I said, it worked with the 2080 Super. All HDMI ports on the LG TV have been set to 8K.
OS: Windows 10 2004
I could not find any information online about it.