您好，
据我所知安装过程中，可能是要检查环境和一些必要的更新的安装的，所以可能需要你的耐心等待。
另外，一般建议先运行最新的Windows update，然后在安装VS2013 update4.
其他member也有遇到类似的性能问题：
https://social.microsoft.com/Forums/zh-CN/5107cc9f-c773-4c52-8302-4c2fa2c24645/visual-studio-community-2013-with-update-4-?forum=vstudiozhchs
就像楼上说的，请耐心等待一下！
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