Hi Kieth,
What version of VS 2015 are you using?
What framework do you have your project set to?
X86 or X64?
How long does a report with saved data take?
Do you have any Verify options in the Report Properties checked on?
First you should never install both the Integration EXE into VS and the runtime packages.
Uninstall both and then install just the EXE into VS on your DEV PC. This assumes you do not have any other BOBJ products installed.
I suggest after uninstalling delete all folders:
C:\Program Files (x86)\SAP BusinessObjects
Repair VS now also to completely remove CR for it's IDE.
Now install only the EXE:
http://downloads.businessobjects.com/akdlm/cr4vs2010/CRforVS_13_0_16.exe
Click OK for the 64 bit runtime also.
Create a new project, add the Viewer to the Tool Bar by selecting Choose Item and .NET Tab and then find the CrystalReportsViewer version 13.0.2000.0 ( only )
Drop the viewer onto your form and then in the References add the Engine, and Shared to start with.
Main form Import the Engine and Shared
Declare the Report Object
Load the report
And set the viewer to the Report Object
And run.
Don