Avigilon/Pelco Integration Issues

Has anyone experianced any integration issues between Pelco cameras and Avigilon VMS? video seems to freeze a lot. they are communicating via ONVIF profile S. trying to determine if this is a integration issue or camera issue.

In the past I worked on several Pelco PTZ's that were analog with the built in IP encoder that was having major freezing issues and it was determined that the firmware needed to be upgraded and then connect the camera via the pelco native driver and not via onvif. Solved the problems.

Have you tried the native driver? and what camera model/firmware are you using.