How to reduce ERR_CONNECT_FAIL error in delayed network

[joker-gege]

ats verison： ats-9.1.3
system：centos 7.6

I want to simulate the working state of ATS in network latency scenarios。i use tc tool simulate network latency(simulate delay of back to parent ) and not use storage，when i simulate 80ms delay，i found many ERR_CONNECT_FAIL error in log。I don't think a 80ms delay can cause so many ERR_CONNECT_FAIL errors。

Is it caused by inappropriate configuration in the records.conf file？Which configuration parameter can I optimize

[joker-gege]

Supplementary Information
When setting the 80ms delay, no storage was used. I used 2000 clients for performance testing

[joker-gege]

80ms delay did not result in ERR_CONNECT_FAIL, but the delay caused the transmission speed to be particularly slow. The parent actively disconnected, and then the parent was marked down

now the problem is why does the 80ms delay cause ATS to return to the source very slowly