https://wccftech.com/lg-promises-firmware-fix-coming-to-its-oled-tvs-for-hdmi-2-1-compatibility-issue-with-geforce-rtx-3000/

With the release of the first HDMI 2.1 compatible graphics cards from the GeForce RTX 3000 Series made by NVIDIA, owners of LG's outstanding OLED TVs from 2019 and 2020 were finally looking forward to testing the potentially amazing combination of playing games at 4K resolution and 120 Hertz with the added benefits of the G-Sync compatibility for variable refresh rate.

Unfortunately, those few lucky gamers that were able to get their hands on a GeForce RTX 3000 Series graphics card were greeted by a series of issues once they connected it to their LG OLED 2019/2020 televisions with the goal of using the fullest extent of the HDMI 2.1 feature set.