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If you have done all of the suggested troubleshooting for this kind of issue, it may not be an issue with your immediate home network. The issue most likely lies on your way to the server. This usually manifests as a congestion or routing issue. It seems like your connection is fine until the moment you disconnect. You'll lose contact with the server only for a moment then have no issue reconnecting. In this situation, it's difficult to pinpoint where exactly the issue stems from.

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