For quite a while, I have not been so confused (and excited) by a technical issue. The problem is: I got very slow download speed (~10Mbps) on my Windows laptop, when connected to Wifi. To make it a bit more puzzling: - The upload speed is much better (~60Mbps). - Sometimes the download speed may reach ~100Mbps for a few seconds, before quickly fall back to ~10Mbps. Having been suffering from it for a few months, I finally decide to take on this issue today. Beginning of the Journey As usual, there are some troubleshooting routine I should do. Also as usual, they don't help much. - Try other devices with the same Wifi - Try to connect to other Wifi - Try to connect to Ethernet - Reset the Wifi router - Run Windows troubleshooter Well, eventually I did get some information. The download & upload speed is actually normal for all my other devices, which includes Android/iOS phones, MacBook Pro etc. This pieced of info narrowd the root cause down to the laptop itself: The router m
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