Kekin

I had the unlimited plan for a few months but downgraded only to the mail plan, that way I can try different providers for VPN, Drive, and password manager.

For password manager I've had Bitwarden for years now and it works great for me. VPN currently with AirVPN because of easy port forwarding, and drive with Nextcloud self hosted because I can, and also works fine for me.

On KDE there's System Monitor, which you can customize to show graphs for CPU usage and temp, among other things, and GPU usage and temp too.

For in-game monitoring there's Mangohud, also very customizable on what you can show in the overlay

Here's some info on it: https://userbase.kde.org/KWin_Rules

From the overview:

KWin allows the end-user to define rules to alter an application's window attributes.

For example, when an application is started, it can be forced to always run on Virtual Desktop 2. Or a defect in an application can be worked-around to force the window above others.

I faced this as well on KDE and got around it by creating a window rule to match it by window title and force a .desktop name to the vs code window, so it shows the correct icon on the taskbar. I wonder if there is a similar functionality on Gnome?