1. Background
The default communication protocol used by Tencent QQ is UDP. However, major operators set the priority of UDP to the lowest, causing UDP data packets to be often discarded. As a result, Tencent QQ will experience connection failures, freezes, and disconnections during voice calls, video chats, and remote assistance, making it very unstable. We can manually adjust the communication protocol to TCP to improve the stability of the connection.
2. Setting steps
Change the default protocol of QQ from UDP to TCP. The steps are as follows:
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On the QQ login interface, select the hexagonal logo in the upper right corner and set it.
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Login server type: Select the second TCP type address (tcpconn2.tencent.com), and the port does not need to be changed. Sure. (As shown below)
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Return to the login page and click Login.