Disabled IPV6 and it works again!
Very cool, and now I have a much better idea of where to start poking around to understand why it happens!
Edit: Or not. It's called "passthrough" for a reason *facepalm*
I'm done chasing this tail...
Here's 2 minute silent video of a speedtest, The QoS tab, the QoS Monitor and Flex QoS tab so you can see what I'm seeing here. You'll also see that my internet is asynchronous, hence my desire for the best QoS I can run :) Normally I run 120d/6u, I changed it to 120d/3u for this video. Also, on...
I saw the issue on all of the QoS tabs that report bandwidth usage, including FlexQoS graphs.
No VPN, but I didn't realize that a lot has changed with QoS since June. Not trying to waste anyone's time.
Edit: Updated to v384.19 and still having issues. I'm sure I could reset and get it going...
I noticed that since enabling FlexQoS yesterday that Upload and Download bandwidth both appear as Downloads while I monitor the QoS tab on my AC68u (Merlin v384.18 beta1). Strangely enough, there is still traffic appearing as Uploads, but I'm pretty sure it's only LAN traffic not WAN.
Before...