Limited upload speeds

Hello and thank you for the reply! No splitters, coax connection is good. My download speeds are fantastic and I will recieve my full download speed but not my full upload speed. I am a streamer to twitch.tv - its not through a browser it's through broadcasting software. This is affecting my business. I believe its a network issue on comcast side. 

@DBN  I appreciate you confirming the steps you've taken. I'd like to get a closer look on our end and see how we can help you resolve the connection issues. Please send us a DM to Comcast Business with your full name, address and phone number to get started. 

To send a direct message:
Click "Sign In" if necessary
Click the "Direct Message" icon
Click the "New message" (pen and paper) icon
The "To:" line prompts you to "Type the name of a person". Instead, type "Comcast Business" there.
As you are typing a drop-down list appears. Select "Comcast Business" from that list.
A "Comcast Business" graphic replaces the "To:" line.
Type your message in the text area near the bottom of the window   
Press Enter to send it

Sorry I dont see "Direct Message" after signing in

@DBN check your profile settings. Go to the profile picture(top right) and click on it for a drop-down menu. Click "Profile Settings", then look for the box that says, "Opt out from Direct Messaging". Make sure that box isn't checked.