【LWIP_F4】怎么解决tcp重传？我心跳信号的延迟超了

CodeOpenedv

STM32F407板子做lwip tcp客户端，一根网线直连电脑，老是会超时重传，心跳过不去，最大心跳延时超过了300ms，平时只有1ms不到
群里的大神们，@正点原子 原子哥帮忙看看吧，折磨几天了。

怎么去 解决掉 重传 或者 让心跳延时 稳定在100ms或者10ms以内？
以下都是在上位机网卡抓的包和 做的心跳统计

重传

中间也出现过TCP duplicate ack  和 spurious retransmission

Dup Ack

心跳时间 统计
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CodeOpenedv

又出错了，
三个豹子

正点原子

发丢了就重新发。1ms 一次没必要，太快了