That was the first one I tried, but it’s a fork from too far back.
The two main issues I had with it were 1) It only reports CPU usage in multiples of X%, where X is the number of cores, which was a long-standing SNAFU in the original GNOME version and 2) the usage graphs on the performance screen are light-mode only, even in dark mode, and there’s no easy option to change it.
Have you tried MATE System Monitor? It’s a fork of the old GNOME System Monitor from GNOME 2.
That was the first one I tried, but it’s a fork from too far back.
The two main issues I had with it were 1) It only reports CPU usage in multiples of X%, where X is the number of cores, which was a long-standing SNAFU in the original GNOME version and 2) the usage graphs on the performance screen are light-mode only, even in dark mode, and there’s no easy option to change it.