Interesting. I got the results above on Ububtu 16.04. Rechecked on Windows 8. The problem is that SyncClient test is so slow only on linux! And it's faster then DeprecatedAPI on windows.
Debugging shows that it hangs for some time here: [https://github.com/nim-lang/Nim/blob/devel/lib/pure/httpclient.nim#L829](https://github.com/nim-lang/Nim/blob/devel/lib/pure/httpclient.nim#L829)
