You can troubleshoot vCenter Management Pack collection cycle issues such as high latency issue, end point not processing requests, and other issues which occur while using vRealize Operations.
High Latency Issue
You might observe high latency between the collector and the end point.
Add RC/CP on site where endpoint resides (RC max latency 200ms - CP max latency 500ms between RC/CP and analytics nodes). Ping can show latency between collector and endpoint. ~10-20ms max. This may depend on the amount of data that needs to be collected.