Hello && Welcome
I think this post might give you an idea of what to do.
This is only a suggestion
If the above post doesnt work for you then on your OS you could inspect maximum socket buffer size for SO_RCVBUF (receive, rmem_max) and SO_SNDBUF (send, wmem_max).
[root@graylog-server~] sysctl --all --pattern "net.core.[rw]mem_max"
net.core.rmem_max = 212992
net.core.wmem_max = 212992
Update maximum socket receive buffer size.
[root@graylog-server~] sudo sysctl --write net.core.rmem_max=425985
net.core.rmem_max = 425985
Restart graylog-server service.
[root@graylog-server~] systemctl restart graylog-server
NOTE: If it doesnt work you can reset it back.
As for…
I’m not sure, maybe someone else might know here.
Hope that helps