Got that one as well a bunch of time with 2 fake dutch inventors. Reported it, got denied because Youtube thinks it's fine to promote a scam like that.
My cable modem is in bridge but I can also reach its web interface the management IP. In that case, you should find out if the modem is vulnerable because an exploited modem could still be messing with your traffic.
For over 10 years I've been running a semi-public Mumble server. It's pretty much zero effort, low CPU and low bandwidth usage.
These days mainly just as a backup for when Discord lags, which over the past few weeks has been often. It's so nice to have a very good, open source, self-hosted, encrypted communications app as an alternative to yet another Electron app.
That's very interesting, that just made me realize my x299 ITX board has the exact same issue with CSM while trying to boot into OS/X (so also BSD-ish, but hackintosh).
So a good chance of hanging on boot, unless I disable CSM and a power loss event will clear this CSM setting.
I recently encountered a bug in an Asrock UEFI (CPU power limits ignored in the X299 ITX motherboard) and contacted Asrock about it.
Got a fixed version emailed to me within a couple of days. Perhaps try that instead of the forums.
You're one of the lucky ones with an ISP with properly configured buffers.
A+ is the goal on that test though, which basically means no extra latency under load.
I love the ER-X because it's cheap, generally available and a fine router with SQM. Just keep in mind that with smart queue enabled it will top out at about 150-170Mbit.
If you're on a faster connection the Edgerouter ER4 with its faster quad core CPU should be able to handle up to about 300-350Mbit.
When you need to shape even more bandwidth, routers based on the Marvel XP Armada chipset do very well. I flashed a Linksys WRT1900ACS with OpenWRT and was able to shape about 600-750Mbps before it ran out of horsepower.