Click the green flag and move the slider to change the beats per minute.
If you change the beats per minute the metronome will still wait the previous spacing until it beats again and notices you changed the BPM. For example, if you change the BPM to 1, it ticks, and then you change the BPM to 200, the metronome will still wait a minute before ticking again and then it will tick at 200 BPM. A good way to solve this is to click the flag.
