IPSEC only works for 30 seconds after connecting or works for 5 days if you REBOOT

[syndicate604]

We have an issue where a IPSEC between two PFsense will stay up for a couple days then die, if we reconnect the traffic will pass for 30 seconds then traffic stops but the ipsec remains UP. The only fix for this is to REBOOT one side of the ipsec and it's back to normal for couple days or a week. Spent hours looking at firewall, vpn settings etc can find nothing.