游戏里按tab，看到ping是40多
cl_ticktiming print detel
看到是100多，其中Sending User Commands特别高，如何优化呢？
[Client] cl_ticktiming. . . . . TOTAL: 122.7ms (directly measured, may not be sum of below)
[Client] Sending User Commands . . : 53.9ms
[Client] FirstInput -> NetSend . : 14.1ms
[Client] Network latency . . . . : 18.0ms (assumed, RTT=36ms)
[Client] Server recv margin. . . : 21.9ms (cl_tickpacket_desired_queuelength = 1)
[Client] Server sim. . . . . . . . : 5.5ms
[Client] Receiving server updates. : 61.2ms
[Client] Network latency . . . . : 18.0ms (assumed, RTT=36ms)
[Client] Client recv margin. . . : 8.5ms (7.5ms + 1.0ms due to frame quantization)
[Client] Client interpolation. . : 15.6ms (cl_interp_ratio = 1)
[Client] Render interpolation. . : 15.6ms
[Client] Client sim + other . . .: 1.5ms
[Client] Render. . . . . . . . . : 2.0ms