Volume and brighness adjustment OSD delay and screen freeze on Ubuntu 18.04
Every time I raise/lower the volume, or change screen brightness through the keyboard, the screen freezes for 1 to 2 seconds before the corresponding OSD appears and shows the change. It didn't happen on 16.04 - started on 18.04.
If I do the same command in the next couple seconds the freeze doesn't happen (the OSD is fast as it should be).
My computer is new (16G RAM, i7-8750H, nVIDIA GTX 1050ti). The problem happens exclusively on Gnome Shell + Xorg combination - if using cinnamon or Gnome Shell + Wayland it works as expected (but both options have their downsides too, so I prefer to stick with Gnome shell). Any ideas of why this is happening? It gets pretty annoying over time :(