The only way to properly use NVK now is Arch Linux or something based on it. Ubuntu doesn’t even remotely have the necessary packages yet. On Optimus (running with both GPUs -AMD and Nvidia - on) everything works splendidly desktop-wise yeah. On MUX (meaning running only on the Nvidia GPU on the laptop) nothing works properly, so be warned.
It only exposes Vulkan 1.0 which means only DXVK works and up to version 1.5.1, not later. Also, Rise of the Tomb Raider was extremely slow when I tried it so some major optimizations have to be done as well I think. Beyond that it’s perfectly usable.
The driver is just beginning to be developed. It’s a miracle it can do this already. In 1-2 years it should be be immensely better, I would say, at this rate, comparable to the proprietary drivers of Nvidia.
Serious games are a genre. So like education games, brain training games. These are called Serious Games. This is a traditional Action RPG with the aim to make the players think. :)