This quick guide explains how you can enable fractional scaling in Ubuntu 18.04, 19.10.
[Howto] Use wayland with propietary nvidia drivers
Wayland does not play well with proprietary drivers. Currently the biggest issue is that nvidia does currently not support Xwayland properly, so apps that require it get software rendering. This includes most games, which are the most common use case for proprietary nvidia drivers. This is why gnome automatically disables Wayland if you have nvidia. … Read more