Comment 21 for bug 1687246

Another consideration are users with Nvidia graphics.

From what I understand, GNOME Shell's fractional scaling support only works with Wayland.

But Nvidia's proprietary driver doesn't yet support Wayland. Some may argue the fault for that situation lies with Nvidia.

But this is nonetheless a regression from Ubuntu 16.04 LTS, where the default desktop (Unity 7) has fractional scaling support which works with Nvidia's proprietary driver.

All that said, even for users without Nvidia graphics, I suppose the regression (of loosing fractional scaling support) also exists given that Ubuntu 18.04 LTS, for understandable reasons, has gone back to X.org by default.

Personally I'll probably be sticking with Ubuntu 16.04 LTS for the foreseeable future, due to this.