ML350 Gen10 Dropping Packets

I have a ML350 Gen10 with a HPE Ethernet 1Gb 4-port 369i Adapter.  Driver version is Intel 1.9.230.0. (Latest)  Operating system is Server 2019.  

Here's the issue:

This server runs perfectly unless I try to connect a second NIC port.  As soon as we do, the server starts dropping packets on the OSs primary port.  Even if we disable the second port, the server still drops packets.  

We have tried multiple different switches.  HP has replaced the motherboard (the NIC is integrated) and the problem persists.  HP is at the point that they want to take the server and completely replace it but this is a production server.  

Here is everything we have done to this point:

1. Ensured the latest driver was installed.
2. Moved the network connections into another switch.
3. Ran latest SPP on the server.
4. Disabled all Hyper Vs on the server.
5. Disabled the Hyper V virtual switch.
6. Disabled the 3 unused ports on the server.
7. Contacted HP and had the motherboard replaced.
8. Ran current SPP again.
9. Downloaded and installed all Windows updates.
10. Connected a USB network adapter. (This adapter worked flawlessly.)
11. Found that the NIC port that was originally configured for Hyper V was still physically plugged into the switch.  Unplugged it from the switch and the active NIC port immediately started performing properly.