[MB] Pleading for some help that I have had for over 2 years with Shaw

Hi guys,  I am reaching out for some help that nobody seems to be able to resolve.  I will do my best to explain. Over 2 years ago, here in Winnipeg, Manitoba, Canada I am with an internet company named Shaw.  I am currently on an XB7 modem from Shaw and previously was on an XB6.  I am connected through Ethernet directly and the XB7 acts as the modem/router.  The current plan is 1 Gb down, 100 upload. I am a Live Streamer on Twitch.tv Out of no where over 2 years ago, my frames began dropping on my Streamlabs OBS.  In most cases it was "only" (which is a lot) 3-4% of my frames, sometimes it would drop even more than that.  I used a 'dummy stream' where I would upload without having any applications open, and it would be graphed on a website called inspector twitch tv.  The graph showed that the upload was spiking downwards to 1, 2, 3 Mbps in some cases, and in other extreme cases the upload would spike all the way down to 49 Kbps.  In my opinion, this was clearly my issue.  To maintain a 1080p stream on Twitch TV, you need 6000 bit rate, which is around 6 Mbps. I ended up trying other twitch servers, I had the exact same issue.  I changed Ethernet cables, modems, COAX cables in the house/outside nothing changed.  So, I ran more tests on like testmy.net, and did a 100 Mb upload, and I would plot that graph, and it would also show that my upload was spiking downwards to 1 Mbps (again, the same problem).  I then would do a DropBox upload, and it was slower than normal too. Shaw sent like 10+ techs here, and they would hook up their equipment and say they see nothing wrong.  But in reality, I could show them all my applications, other websites that show my speeds are slow, and they would just keep going back to speedtest.net (Ookla based software) which is basically the only speed test that doesn't show my problem. Eventually I was able to get ahold of someone deep in Shaw, someone they referred to as a plant specialist -- he contacted me personally, and basically out of no where said he found the problem, and it was something in the node (he works on the actual infrastructure and was able to find it).  Its important to note, that this problem was intermittent (just as my problem is now) and doesn't happen every second.  Sometimes it can take up to 2 minutes or longer for it to happen.  When he found this problem, the graphs I would create, almost completely cleared up, by like 95%.  There was still the odd spike downwards, but it wasnt *horrible*. 2 years later, I'm experiencing the exact same problem and going through the exact same process.  My upload is spiking to 49 Kbps, 1 Mbps, 2 Mbps, the speeds are slower everywhere I go on the internet except the speedtest.net website that they keep sending me to, they come over here and hook up their equipment for 30 seconds and say they see nothing.  I feel like I've done absolutely everything and to me it seems like its a problem in the node again, and it seems like the people there just dont care to fix it.  But I'm open to the possibility that the settings in the Shaw network or the modem or something are wrong, so I am here asking people like you who know better than me, to help me with this. I use to make a very small amount of income on Twitch, and because of this it has completely ruined that.  Shaw has a monopoly in my area, the next fastest internet here is 100 down 10 up.  Here are some pictures of my problem https://imgur.com/oOXXyXF https://imgur.com/jmQ7Nxf https://imgur.com/YxLeyVb https://imgur.com/BiWRvIw