Please share some gnome tips and tricks to increase performance, improve UI etc.
Hello,
You can use "tuned-gui" (Copyright (C) 2014 Red Hat, Inc.), it's a GNU GPL license :)
Best regards,
Pascal
Install some material themes and extensions for speed meter, Resources usage graph, etc.
Check out Gnome Extensions. There's tons of useful extensions to make gnome better.
https://extensions.gnome.org/
