Updated yesterday from 37, I hadn't put 38 precisely because it was disgusting again and so I decided to wait and leave 37 which is fine instead. I confirm what my friend TLE said, everything is good and works well, the Gnome 45 works well and runs as smoothly as the version for Fedora 37 and therefore they have again optimized everything in the correct way. As for the graphics server, I must say that I also encountered some problems under Wayland. If I start under the latter, it sets the 4k resolution as default, i.e. 3840 x 2160 but if I want to change there is a big bug and it doesn't allow me to do so. So I went back to the x11 server as well which is still better today after a long time... I'm now waiting to see Chromium return to Fedora, let's see if it will be possible...