Decided to remove #Fedora and go for the "simple" #Ubuntu, and ditch the idea of running #i3 or #sway WMs on my work laptop. Getting it set up and configured was no issue, and I love the simplicity and elegant customizable UI that i3 / sway gives, but the random crashes, specially related to using external monitors, was too much to deal with.
The amount of hardware needed to be supported to make these things work on multiple systems is quite impressive, so no bad feelings towards fedora / i3 / sway, this seems linked to Nvidia and non-open drivers.
As Ubuntu is the "official linux" for #Lenovo, that became the option, and GNOME is the default "tried and tested" there.
Letting go of i3 for Gnome was not an easy choice. But so far I have found tips & tricks to turn Gnome into something "i3 like", and I have now most of my keyboard bindings mapped. I need a better rofi (pop up menu) replacement, and a couple more things,. but I will get there.
Ubuntu/Gnome handle multi monitor / screen switching well, yay.