I run Ubuntu 23.10 Mantic on a Lenovo laptop with nVIDIA GeForce RTX-2060, but I use only nVIDIA graphics, not the built-in Intel, by selecting “Discrete Graphics” in the BIOS.
As I am not happy with Wayland, I still use X11.
I login using Gnome, so version 45, and not Ubuntu.
I have 2 issues:
slowness
At startup, just after logging in, I need to wait almost a minute after clicking to e.g. open a terminal or Thunderbird before it really opens.
external monitor issues
When I run VLC on an external monitor via HDMI, the frame rate of 29.7 fps is not reached, a movie looks very bad and delayed.
I also installed XFCE4 and can login in XFCE, there both issues do not exist.
I learned thanks to the Ubuntu Desktop Environment forum that the same user for different DE’s is asking for problems…
So now I created 2 new users on my laptop, one for Gnome Desktop Environment, one for Ubuntu DE and kept the existing user for XFCE.
Now indeed in Gnome everything is normal with VLC and after startup.