When I put plugins with heavy latency into a channel I get a most annoying double-click before the pre count of the metronome ends. I realized if S1 counts more than 250ms overall plugin latency this is happening.
I was in contact with the support with this issue and I became the most stupid answer, why I'm using plugins with this high latency.
So when he is ignoring this issue I make it public and see what the developers are saying...