You may have something there. What I've noticed also is that it stutters now and again and when it happens it catches you out.

While I've been typing this I set it away and it's been going in the background and it definitely sounds off to me. Now I know it's not normal to type while the metronome is playing but I've noticed that if you scroll the window or maximise/minimise a window it definitely causes the metronome to falter.

Is this all something to do with the PC Main processor? I've got a fairly new PC so it isn't overloaded.

This needs some investigation by the GT Website bods I think.

Sounds like there's a drunk on the drums :p