Hi @Ape, and welcome!
Please see the update announcement
More specifically:
Some Nvidia cards don’t work with the current 460.80 drivers when used with Display Port and/or 4k Monitors. More about the issue at the Nvidia Developer Forum . We recommend to switch to Nouveau driver as needed. If you however need the Nvidia driver, you can get the
PKGBUILDs of the 460.73.01 version and build your driver locally withmakepkgor use the pre-compiled packages: nvida-utils, dkms and lib32 + precompiled .
Hope i9t helps!