A lot of my fiddling with Linux graphics issues have simply gone away by using Manjaro Linux (a user-friendly version of Arch Linux). It has a GUI configuration

A lot of my fiddling with Linux graphics issues have simply gone away by using Manjaro Linux (a user-friendly version of Arch Linux). It has a GUI configuration manager (also available in command-line) which can easily install and switch between multiple versions of drivers (both free and non-free). It even has support for NVIDIA Optimus, which you can switch between integrated/discrete graphics with only a shell logout/login (worked for XPS 15, not sure for others though) Of course, the better way to solve this is to ditch NVIDIA altogether and move to Intel/AMD, where you can reap the full benefits of Wayland. Although Wayland works with NVIDIA on Gnome and KDE, the performance for XWayland (the X.org compatibility layer for Wayland) still seems unusably slow.