Cox doesn't actually provide the internet speeds I pay for

Okay, this is my third time writing about this on this forum. At this point, it's getting ridiculous. I pay for gigabit internet, which includes 35mbps upload rate. Except for the last 2 months I am unable to keep even 6mbps upload rate steady for my twitch streams. The first month I had absolutely no issues with my rates and then all the sudden when I begin streaming (ALL WITHIN MY DATA LIMITS) i begin to get throttled. I am sick and tired of having unreliable, inconsistent upload rates. I have tried unlimited data. I've tried gigabit. I started off with 500mbps and 10mbps upload speeds for my plan, it worked perfectly fine, then the upload rate quit being consistent and I started upgrading my service to try and bribe my way into having the ability to stream to twitch. Why on earth am i paying for gigabit internet (only need it for the upload) and not getting anywhere close to the advertised speeds. Why does cloudflare speedtest not come close to the official ookla ones? I had a bit of a buzz in the game I was streaming, I was building something of value for myself, and of all things my internet connection (WHICH SHOULD BE MORE THAN GOOD ENOUGH) has held me back from actually pursuing this any further. I've had techs come out. I've reached out to customer support and they reset my modem. I've done everything. My only solution at this point would be to literally move and change providers which just isn't in the cards.