Comment 6 for bug 1865323

Aloys, I have found ways to minimize the delays. It only happens when I use "Switch User" or when another user is logged in for a long time, so I use "lock" instead of "Switch User" when I'm not using the computer and make sure my wife always logs off when she is done and I log back in as soon as I notice she logged off. This gives me only slight delays and she doesn't have any delays.

I'm sure now that the issue is not with lightdm-gtk-greeter, since I have this issue on Ubuntu Studio (lightdm/xfce4), Ubuntu (gdm3/Gnome) and Kubuntu (sddm/Plasma). It is probably (mostly) an Nvidia bug, but I didn't have this issue on UbuntuStudio 18.04, so there is some new code in X11 or kernel that is causing it. And I have no other issues with the Nvidia drivers.