Change your Windows MTU

Example how to find your correct MTU

 

1. Find your Windows MTU:

netsh interface ipv4 show subinterfaces 

 

2. Find your ISP MTU:

ping yourISPgatewayIP -f -l 1400

incrice size until you get:

Packet needs to be fragmented but DF set.

Last sucsess ping size+28 is you correct MTU

 

3. For set MTU:

netsh interface ipv4 set subinterface "Local Area Connection" mtu=1472 store=persistent