Under normal circumstances, TCP / IP default data transmission unit to accept the size of the buffer is 576 bytes, if the size of the buffer set relatively large, once a TCP / IP packet data Error, then the entire data buffer in all the packet content, will be lost and re-transmission; obviously continue to re-transmission, will greatly affect the efficiency of ADSL transmission of data. To this end, set the appropriate buffer size, to ensure that ADSL transmission data efficiency is always high, will have a direct impact on the ADSL transmission speed! Here is the method:

1. Open the “Registry Editor” by pressing Start + Run keys >> type REGEDIT;

Then you can find “HKEY_LOCAL_MACHINE\System\CurrenControlSet\Services\Tcpip\Parameters” child Key;

2. in the right key area, find or create a new named “GlobalmaxTcp WindowSize” DWORD key value;

Set its data value data to “256960” (decimal);

3.  close the “Registry Editor” , You can restart the computer!