I am testing the free version of the PRTG. Because we just need several more sensors than the 30 sensors limit, we put some of the sensors on pause then it was allowed to add more sensors into the tool. But the wired thing happened after that, some of the live monitoring diagram looks like been sampled. And the worst thing is some alerts generated without reason, for example, some new added sensors for several NICs showing down but actually not. Anybody here has the same experience? Or any expert can explain this?