For all those who are in Cinnamon, XFCE or any other non GNOME DEand GNOME System Monitor you may see it is crashing, an update that is comming will solve it, but in the meanwhile I would suggest you to use gnome-usage
If someone wants to know more here is the error
(gnome-system-monitor:2717): Gtk-CRITICAL **: 10:00:07.967: gtk_box_pack: assertion ‘_gtk_widget_get_parent (child) == NULL’ failed
(gnome-system-monitor:2717): Handy-ERROR **: 10:00:08.201: gtk_window_set_titlebar() is not supported for HdyWindow
fish: Job 1, ‘gnome-system-monitor’ terminated by signal SIGTRAP (Trace or breakpoint trap)