@mattzap said in Help with troubleshooting low interface throughput:
Ah-ha! Yes, I do have AT&T. Here's the relevant threads I just found:
https://forum.netgate.com/topic/138604/sudden-drop-in-throughput-900-900-on-modem-vs-30-100-on-pfsense/14
https://forum.netgate.com/topic/112691/wan-throughput-capping-at-500mbps-att-gigapower/3
https://forums.att.com/t5/AT-T-Fiber-Equipment/DMZPlus-mode-in-my-Pace-5268AC-causing-browsing-to-not-work-but/td-p/5712305
I haven't read through all of this yet, but it all starts out matching my situation exactly. I'll report back when I get a chance to get up to speed on this and see if it turns out to be my issue.
Thanks!
Yep, those are some of the relevant threads. I think the user found a solution on the AT&T forums.