Hi DD,
Thanks for using the Syncfusion product.
The mentioned issue is reproducing at our end, so we have logged issue report on “3D rotation is not proper when the page has more number of charts in it”. Fix for this issue will be included in our Essential Studio Volume 2 service pack 1 release which is expected to be out at the end of July 2016. And also a support incident to track the status of this defect has been created under your account, kindly check with your account.
Please let us know if you have any concern on this.
Thanks,
Dharani.