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Is the WiFi at home disconnected while using it, or the internet speed is getting slower and slower, and the ping drops when watching video cards and playing games? Don't rush to change the router, check it in order first. Today, the common causes are prioritized according to the investigation priority, starting from the most problematic link and going all the way to the bottom. Problem diagnosis: What are the common causes of WiFi disconnection and slow internet speed? Let's start with the fact that most WiFi issues are temporary interference or minor issues with the router itself that can be fixed without changing devices. Common causes (by frequency......