francesco, I think the reason you find Xorg is more fluid might be because you're using two GPUs (Intel + AMD) and mutter's Wayland handling of secondary GPUs is sometimes inefficient. To prove that is the issue, you can try unplugging the external monitor(s) and just compare the laptop screen performance in Wayland vs Xorg.
** Changed in: gnome-shell (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1982560 Title: Mouse lag/stutter (missed frames) in Wayland sessions Status in gnome-shell package in Ubuntu: Confirmed Bug description: Mouse lag on fresh install of ubuntu 22.04 LTS (wayland). This problem didn't occur in previous version of ubuntu based on xorg. Specifically, frequent mouse lag when I turn on the pc, when I unlock the pc or when heavy operations are done on it. --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu82.3 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME DisplayManager: gdm3 DistroRelease: Ubuntu 22.04 InstallationDate: Installed on 2022-11-13 (50 days ago) InstallationMedia: Ubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64 (20220809.1) NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair Package: gnome-shell 42.5-0ubuntu1 PackageArchitecture: amd64 ProcVersionSignature: Ubuntu 5.15.0-56.62-generic 5.15.64 RelatedPackageVersions: mutter-common 42.5-0ubuntu1 Tags: jammy wayland-session Uname: Linux 5.15.0-56-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1982560/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp