Comment 21 for bug 1930754

One more thing, per my test, on LAN, you can kind of reproduce this issue by

On iperf server:

1. set packet delay to 5ms

   "tc qdisc add dev eno1 root netem delay 5ms" or
   "tc qdisc change dev eno1 root netem delay 5ms"

2. run iperf3 server by command "iperf3 -s"

On Client (say the machine have this issue) to simulate download:

   "iperf3 -c SERVER_IP -R"