Packet Loss at end of node

Hi, I recently switched from Xfinity residential service to Comcast Business service for business features.

On my previous connection, I often had many issues with packet loss making things like voice and video calls unusable at times, and online gaming impossible. I've desperately tried to have this issue resolved, but to no success. I didn't expect these issues to go away with my switch to Comcast Business, but instead maybe some hope that I could get better help to resolve it. The packet loss seems to consistently begin around 4PM on my connection, but sometimes seems to happen almost at random.

I'm not the most knowledgeable on how cable internet connections work, but I've picked up as much knowledge as I can throughout my efforts to try and get my packet loss resolved.

I've learned from technicians in my area that my household is apparently at the end of a node, which means much of the connection interference gets passed down to me. The only other options for internet in my area is 3 mbps DSL or satellite ISPs, so I have no choice but rely on Comcast to help me resolve these issues. Is there anything that can be done to have a working high speed connection?