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I'm Tyler, one of the developers in charge of the download servers.
This is very troubling to hear!
Highwinds is a new service we've been trying out—it's aimed at making the downloads much, much faster (roughly 5x faster than our previous update host), so if it's actually slowing things down for some users, we certainly want to know why!
Would you be willing to run a few tests for me to help diagnose the problem? It might take a few rounds of tests to get to the bottom of it, but each test should be pretty quick for you.
If you're willing, here are the first steps toward diagnosing the problem. You're welcome to answer here (in a comment), or by emailing me---my email is [my first name]@x-plane.com.
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