Suggestions for troubleshooting slow nat performance (throughput)?

[opnfwb]

Nice! always fun when a cheap fix does the trick.

I've used those i340 server card pulls for years in various routers. They're quite reliable, I haven't had one fail yet. Hopefully it gives you many years of service.

[jwest]

I did purchase from the ebay seller you linked.... https://www.ebay.com/itm/235149064664

Item was well priced (a bit low I thought), well packed, shipped quick, great condition. Am happy with them, thank you for that.

At those prices, it would be silly not to buy a spare for each location just to have a hot spare on hand whether it ever gets used or not.