The Kendo UI CDN is hosted on the Amazon CloudFront and indeed network monitoring is slowing down speeds greatly, as discussed in this thread on the AWS developer forums:
Based on the reply there, using a Chinese-based CDN provider is indeed a recommended option. The files that you are going to need depend on the functionalities that you include in your app. You should start from the actual script and CSS references in your app. Then add the styles/images
folders from your Kendo UI installation folder, as well as the styles/[SkinName]
folder, where [SkinName] is the name of the Kendo UI skin your app is using.
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