Don't know why and how.
I never have this problem before, just since yesterday. My wifi network is very slow. When I tried to ping the wifi gateway, I got disconnected or time out every few seconds and ping latency is very large. Normally I get 2-3ms, right now 60ms or longer.
CPU is very low. Traffic only 2-3M, I have a 100M internet and the wire network has no problem.
What is wrong?
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