XPS 15 9570, slow internet download/upload speed

Greetings, DELL Community:

First, tremendous thanks for this resource and for those who've helped me out previously - it is greatly appreciated. Second, apologies for the length beforehand and if I'm posting this in the wrong place- trying to cover all my bases concerning rectifying my issue: extremely slow internet speed. 

SYSTEM SPECS

DELL XPS-15 9570, running Win10 Home, Build 17763, running an Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz, 2208 Mhz, 6 Core(s), 12 Logical Processor(s), 8GB physical memory, 11GB Virtual Memory (w/3.8 available), No Hard Drive, but a 223.27 GB SSD Drive (NTFS) w/149.61 GB free space, and I'm also running an external Toshiba Terabyte drive (931.39 GB NTFS w/905.11 GB Free also NTFS);

THE ISSUE:

• On 5/27/19, I began uploading a 904 MB, 17min31sec, MP4 1080p clip to my YouTube channel, edited using SONY VEGAS PRO 16;
• As of Thursday, 5/30/19, the clip was up to 95% done, but it hung up afterwards - I let it sit;
• As of Friday 5/31/19, it was still hung up; frustrated, I went ahead and deleted the upload;
• I uploaded a clip to YouTube the previous week, and it only took a few hours (the clip was 422 MB, 15 min runtime, MP4 1080p);
• I plan to attempt re-upload later tonight/early Sunday morning;
• As far as I know, the clip meets the required YouTube specs for uploading.

POSSIBLE SOLUTIONS/STEPS TAKEN:

• I did an internet speed check, and it told me that my upload speed is .4 mbps, and there is also a 447kbps figure(please see the screengrab below);
• I also moved my router (CISCO connected to a Westell 6100 box) 5 feet closer to my laptop;
• I made sure that all my required DELL updates were installed; the only update I have remaining is a Windows 10 update which I haven't done yet: 2019-05 Cumulative Update for Windows 10 Version 1809 for x64-based Systems (KB4497934);
• I also briefly searched the forums here, and saw many mentions of uninstalling SmartByte - I don't have that installed;
• I also came across several pieces of conflicting information (from various sites, including this help forum) concerning a Killer Control Center app - some said it worked; some said it didn't; I haven't used it yet;
• I also came across several tidbits online claiming that there is an issue with a chip? in the Dell XPS-15 9570 that may be contributing to the extremely slow internet upload speed;
• 

MY QUESTIONS:

Before I set out to re-upload the 17min31 sec clip, how do I:

• a)Fix the internet speed issue? Should I call my ISP and pay to have it increased??? (Really want to avoid that, if possible, for now);
• b)What specific solutions do you recommend that I use to resolve this issue? 
• Also, would I need to uninstall Killer Control Center (even though I don't even use it yet, and am leery of doing so)? 

I'd like to resolve this without having to spend a lot of $, if that is possible. Thanks so much. Looking forward to hearing back.

Respectfully,

C.E.