We have seen some issues when there too many datas rendered in the DayPilotScheduler. When I checked the Release note, I see that this problem has been corrected in the DayPilot Pro for ASP.NET MVC 7.1 SP2.
But we're using the DayPilot Pro for ASP.NET WebForms 8.0.
So I'm quite interested if this has been corrected in the latest version? If this still exists, when are you able to provide a new release to correct this issue?