上周公布的测试版速度很快，但是也很容易造成锁机——算是达到了大部分测试版程序的水准。

Test drives last week were speedy but also very crash prone-par for most alpha tests.

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微软还指出，这款最新的预览版还包含一些速度上的改善。

Microsoft also notes that this latest preview also includes some speed improvements.

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你将注意到的另一个好处是，这一版启动速度更快、占用内存更小。

Another benefit that you'll notice in this release is faster startup times and a smaller memory footprint.

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