couldbiut be the switch?
eally don't know where to start troubleshooting
Quotecouldbiut be the switch?could be. STP or something like that.can try to enable PortFast on PC interfaceQuoteeally don't know where to start troubleshootingcan try to connect directly to OPN and compare the results
First try what Fright said.After a quick search it looks like in S2500 switch you can configure DHCP relay. In that case you can set your OPNsense as the DHCP server. Maybe it helps to speed things up.As a note I wouldn’t have removed the unifi switches and APs. Exchanging the router for an OPNsense was a good idea though.