Aurora R13, internet speed extremely slow

Hey everybody,

I'm kind of at my wits end.  I purchased the new Alienware Aurora R13 in November, and it arrived early December.  I purchased it because I need a bigger, more stable computer when I'm streaming or talking to friends on Discord while playing poker.  Sometimes I'll try to get on webcam or I'll try to screenshare to show my pokertracker 4 (it's a program that tracks your poker play and keeps hands histories for studying, etc), and I'm not able to.  At first I thought it was the wireless within the desktop (which is still ridiculous), so I purchased a Netgear Powerline adapter so I can have it hard wired from my router.  I understood I would have slower speeds than using a direct cable to my router, but the computer is upstairs in my office, while the router is downstairs in the laundry room. Despite doing this, I had no better results.  When I get on discord, I'll have full connection, but as soon as I try to get on webcam or do the screenshare, my connection drops to 1 bar.  I have a MSI laptop computer right next to me with a speedtest showing I'm getting approximately 500Mbps down an 110 Mbps up, so I know it's not my internet.  I've tried everything, from googling to even going on the Dell Support where they did a remote takeover on my computer while I sat there and watched the mouse move.  Does anybody have suggestions on what I can do?  I'm getting sort of desperate at this point.  It's making me upset that I spent over $2,000 on a desktop for something that I cannot use it on.  Attached is the screenshot of the speedtest I conducted.  It's just so inconsistent.