There has been a fix on the Nvidia support page that fixes issues for those who want to connect their gaming PC to high-end 4K TVs and monitors. The revision 466.55 is based on Nvidia's latest 466.47 driver and deals with two problems:
- (RTX 20 Series) (GTX 16/10 Series) (HDMI) 4K @ 120Hz display mode is not available in the screen settings
- If the GPU is connected to a 4K UHD TV, the system may crash when starting a virtual reality game
I guess the first issue will affect a lot more people, as there has been an opportunity to enjoy the latest games with higher resolutions and ever-increasing refresh rates. To be fair, this is probably a more important factor for the latest 30 Series (Ampere) cards, while this revision corresponds to previous generations of cards. And if you like a bit of RV in front of the big screen TV, the second solution is also pretty important.
This hotfix does not appear on the driver download main page, so you will need to go directly to the page review support page. However, they should arrive at the next major driver release, so if none of the issues affect you right now, you can probably get through it right now.
Oh, and in case you're wondering about the difference between the two different driver downloads, the DCH version is a little smaller and may be faster to install, though it can get dirty if the control panel doesn't is installed on your drive C:.
A good way to choose is to look at what you already have installed. Right-click on the desktop, select Nvidia Control Panel, and then click the System Information link at the bottom left. You'll find your current installation type next to the Driver Type entry, below the version number.