Change Windows Network Interface MTU

Test MTU by Ping:

ping www.sina.com.cn -f -l 1500

+ 28 bit once the max value found

netsh interface ipv4 show subinterfaces
netsh interface ipv4 set subinterface "Wi-Fi" mtu=1492 store=persistent

Test TCP latency with PsPing utility:

psping.exe -l 8k -n 36000s -h 1000 -4 www.163.com‚Äč