Using TestMy.net to compare your speed to others on your beam

Recently, I have been seeing really good speeds.  In fact, I was thinking they were unusually good.  Of course, I mostly just watch the latency as it is an unobtrusive way to have an idea of how busy things are without running a testmy -- kind of like guessing at how many people are in the store by tracking your average wait time at a grocery checkout.

And things have seemed empty, so I figured I would run a bunch of testmy in prime time which I don't normally do because I don't like the idea of wasting bandwidth when it is most in demand.  The results look like they came from 4am -- this beam feels empty, like right after I first was installed in 2017, and again right after that first gateway upgrade in 2017 that doubled the IPGW that were showing up.  I had other testmy result recently that were very good, but as they were run in less busy times, I figured it was not that unusual.  In looking at TestMy scores for cities that I have a been associated with, I see a bunch of bad scores that have dragged the averages down on the recent tests list.  Of course, many of these used the wrong test size but maybe TestMy backed the test size down since they were around 1Mbps?

There is a fellow reporting speed issues, and in his early tests, I noticed he was associated with a city at the southern edge of my beam according to SatBeams, but I figured that SatBeams is probably off a bit for the beam placement, and the location data is probably only crudely lining up with the beam, so he could be on a beam to the south.  In more recent tests, the location data gave a city at the northern edge of my beam, so unless this location data is crazy off at times, it seems there is a fair chance he is on the same beam as me.  

Also, I noticed his tests show remarkably consistent speed throughout the test, usually considered to be a sign of low congestion.

If he is in my beam, could other people on this beam be seeing the same thing he is?   If so, could the high speeds I am seeing be the result of a group of other users on the beam being slowed way down by something?  Could the rash of new testmy results with low scores at cities I have been associated with in the past be related?

I am showing J2CHY082HNSIGW1204 and have had this since 10/11 with OutRoute 4.  I noticed my good speed some days later about the time the fellow posted about his low speed.  I have seen in the past cases on this site where users report consistently bad speeds, then something happens and they are restored.  Could a gateway server that handles a group of customers on the beam just need a reboot or something?

For you long time satellite users that have seen this before, was the resolution something along these lines?  On the flip side, have you ever had a period of a week or so where the speed is insanely good?

What do you think?  Of course, there is a lot of guessing here, but with some communication some light might be shed on what is going on.