So, update, FF did at one point take my line down for a bit, then asked if improved, it didn't.
MTR doesn't usually show any packet loss, iPerf definitely does for local, even to Atomic's own iPerf server.
FF are the nicest bunch ever...
Atomic is been pretty good though, their technicians are the ones who remind me of stuff rather than the other way around, lol, that's how it should be, service on terms of their side is pretty good, I'd have been frustrated with me by now.
In terms of local downloads, well, updated Mordhau yesterday at a nice 12MB/s, and downloading W10 right now, sadly it doesn't flat line at 100Mbps, but I've never seen it flat line:
In terms of latency, it's been pretty good except for the mess-up on FF side, would recommend atomic.
I especially like the fact that they have a nice Telegram announcement channel, I saw people on FB group complaining about speeds and stuff yesterday (also here on CI), meanwhile I got a nice advance notice by Atomic. It's the little things besides the good connection that matter, and Atomic definitely delivers them.
https://t.me/joinchat/AAAAAEkKPCEuCjw9zmO0Bw
Btw you don't need to be part of Atomic to be part of the group, recommend anyone on FF to join it, the Desktop Telegram client uses ~12MB of RAM including all my other chats, so not an issue to have open permanently in tray to get a notification when FF have issues.
As a side note, I've now built a GUI app to do iPerf tests for me through the Windows Subsystem for Linux as the normal Windows network stack has issues with UDP packet loss graphing, but you still have to do all the set-up beforehand, so not sure if worth giving out, lol.

for custom and:

For one click with output on the desktop. Built it so I can get my brother to do the iPerf test for me when not at home. It's 18MB, but you'd also need to download a WSL image, so ~150MB total.