I don't know how to record the problem, but I have made some experiments with following findings:

- Four beats per bar at 100 beats per minute: at starting, the first beat visual and acoustic were at the same time and it took about 40 bars until the first acoustic beat was together with the second ...

Thank you for the answer.
I have checked the FAQs and played with the options and yes, I have adjusted the latency compensation and it works nice for this part - it is a constant offset.
What I experience is that the FREQUENCY of picture and sound is different. When the metronome picture has the ...

I can use the rhythm exercises only with the optical metronome.
The acoustic signal has a slightly different frequency: after some beats it runs out of sync.
While clapping in accordance with the optical metronome gives fine results (although difficult to keep in view while following the notes ...