So far we have not encountered the problems that you described.
I created a test project based on your description. In the test the chart is printed correctly with 145 points and 3 series mappings. I am attaching the project to this post so that you can also test it.
If you keep experiencing issues with this you can send us some code that reproduces this issue, so we can test and investigate where the origins of the problem are.
the Telerik team
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