@EA_Blueberry Sorry it took awhile to respond, long week.
I did everything I could think of with the Clean Boot. I disabled all startup programs, tasks and services using the tutorial in the link you provided. For those following along, I had trouble with my antivirus solution in particular (probably some security measure) so I had to uninstall it completely and reboot in order for the disables to take full effect. For reference that is Avira Antivirus. Its a great product but it had to be removed for this test.
Sadly after all of that there was no change.
So I went full scale and actually did what I said previously - Safe Mode with Networking. Now for everyone else - I don't know if I would recommend this. The game ran like absolute hot garbage - like 10frames/sec. But I was able to make sure I deleted the "Official" roster file and download the newest "MaddenUltimateTeam" roster file. Sadly, this did not help either. Safe Mode with Networking + Clean Boot did nothing to resolve my issues.
That narrows down my troubleshooting back to...
1) Network environment. I tried removing my router completely before but not with Clean Boot + Safe Mode with Networking. So that's still an option next chance I get. Additionally I am going to be at a friends house next week with my PC so I am going to try connecting to the Madden Share over there to see if that helps.
2) Complete uninstall of Origin + Madden on a new Windows Profile. This was already done between Madden 19 >> Madden 20 but perhaps may be worth trying.
3) Complete uninstall-reinstall of Windows 10. Same deal, unlikely to help because I already did this between Madden 19 and Madden 20 but may be a last ditch effort.
Blueberry if you have any other ideas please let me know. I liked the Clean Boot idea but no luck, at least for me.