[SOLVED] The LG C9 and CX series OLEDs do not support HDMI 2.1

Solution
They absolutely support HDMI 2.1. Heck, the C9 actually supports the full 48 Gbps. which the CX/C1 don't (although to be fair, it's not like you actually gain anything since the panels are native 10-bit). Likely just a mistake on NVIDIA's part; they probably haven't updated old entries with a separate label for HDMI 2.1.
They absolutely support HDMI 2.1. Heck, the C9 actually supports the full 48 Gbps. which the CX/C1 don't (although to be fair, it's not like you actually gain anything since the panels are native 10-bit). Likely just a mistake on NVIDIA's part; they probably haven't updated old entries with a separate label for HDMI 2.1.
 
Solution