          name: 'MS',
                suffix: 'ms',
                range: 150,
                value: performance.now(),
                callback: (value, item) => {
                    // console.log('MS callback:', value);

                    const time = performance.now();
                    const ms = time - value;

                    item.update(ms);
                    item.setValue(ms);

                    // The return value is passed back in the next frame
                    return time;
    