Lenevo Ideapad Slim - Ubuntu slow, Lost of internet, Main display not clean resolution

[Fred]

Since I installed Ubuntu 22.04 my laptop is slow
I lose my internet connection intermittently.
The main display resolution is not clean. The image rendering seems diluted and unclear, especially at the edges of the screen.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-5.19.0-45-generic 5.19.0-45.46~22.04.1
ProcVersionSignature: Ubuntu 5.19.0-45.46~22.04.1-generic 5.19.17
Uname: Linux 5.19.0-45-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Tue Jun 27 20:33:17 2023
InstallationDate: Installed on 2023-06-21 (6 days ago)
InstallationMedia: Ubuntu 22.04.2 LTS "Jammy Jellyfish" - Release amd64 (20230223)
SourcePackage: linux-signed-hwe-5.19
UpgradeStatus: No upgrade log present (probably fresh install)

[Fred (fmccabe80)]

Since my last comment, I did some changes:

I did append intel_iommu=off to GRUB_CMDLINE_LINUX_DEFAULT and it seems to help. My laptop is responding faster now to command.

When internet is not working (showing network, but not responding) I use this command and it fix the issue (I don't think it will fix the issue permanently): sudo systemctl restart NetworkManager

The only thing that I have been unable to fix so far is the resolution of the main monitor that is still look like it is diluted and not clear.