D1哪吒wifi及ETH速率很低，请问是怎么回事？

[cube_work]

测试部拿了D1哪吒板子进行性能评估，测出来的wifi数据很低，请问是怎么回事？
是否有官方数据供参考？

无线		11n/40M		11n/ 20M
TCP:	TX:	41.7 Mbits/ sec	TX:	43.4 Mbits/sec
		44.4 Mbits/ sec		42.1 Mbits/sec
		41.1 Mbits/ sec		42.3 Mbits/sec
	RX:	45.4 Mbits/ sec	RX:	40.3 Mbits/sec
		45.2 Mbits/sec		41.2 Mbits/sec
		45.1 Mbits/sec		40. 1 Mbits/sec
UDP:	TX:	25.6 Mbits/ sec	TX:	25.6 Mbits/sec
		26.3 Mbits/ sec		25.6 Mbits/sec
		26.8 Mbits/ sec		25.6 Mbits/sec
	RX:	44.7 Mbits/ sec	RX:	46.9 Mbits/sec
		42.8 Mbits/ sec		45.4 Mbits/ sec
		43.5 Mbits/sec		46.3 Mbits/sec

我是参考的《D1_Tina_Linux_网络性能_参考指南.pdf》这篇文档里提供的方法测的，iperf版本是3.9

[cube_work]

1000Mbps有线网络:

--	--	--	--	--
TCP	TX:	415 Mbits/sec	RX:	403.5 Mbits/sec
UDP	TX:	147 Mbits/sec	RX:	185 Mbits/sec

还有有线网的测试数据，好像也比较低。