Connection Guide No Leatrix

1. Open regedit
2. Navigate here
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Tcpip\Parameters\Interfaces]
3. You will probably find several “subfolders”. Click through each folder until you find the one with the most entries in the right pane. The right interface will have many entries, e.g. DGCPDefaultGateway, DHCPDomain, DHCPIPAddress, Lease, NameServer, T1, etc.

4. Create two “DWORD” registry keys called TCPAckFrequency and TCPNoDelay:

5. Double-click on each new registry key and change the value from “0″ to “1″ (without the quotes, base hexadecimal)

6. Restart your network driver and enjoy a lag-free Tibia

What we just done via a handy registry tweak is to disable the delayed ACK. ACK (short for ACKNOWLEDGE) is a confirmation that you have received a network package. While you are playing anything online, you are constantly sending and receiving network packets and each of those packets has to be confirmed from your local machine. To prevent a network flood of ACK messages (sending out a confirmation for EVERY package) Windows has a smart trick! Windows waits some time (up to 200ms) before it sends out the next ACK, so that it can send out multiple ACK’s in one go.

TcpAckFrequency = 1 will disable delayed ACK. Default is 2, so it will wait for 2 packages until sending out ACK.
To disable TCP packet batching, we set TcpNoDelay to 1, so all packets will be send no matter what size they have (normally TCP sends out batched packages).