Daily Slow Upload Speeds...

Hello,

I have tried a thousand times to get through the automated system and while restarting my modem works as a temporary fix, the issue still persists DAILY. Every day, around 10:45a-12p, my upload speeds will slow down to 0.1Mbps and it affects all of my devices. My work laptop(connected to VPN for work), my personal PC(no VPN, but network extender), my husband's work laptop(connected to main modem via WiFi). This is not working for me because we both work from home and our jobs are production-based. This interrupts my ability to do my job and puts me at risk for reprimand or worse. Restarting my modem every day should not be expected.

I did talk to Xfinity multiple times via chat, when I could get through. I was told that my modem was an older model, so I went to the Xfinity store and got the X8b model yesterday to see if this would solve my issues. Unfortunately, it did not. Today, at 10:45, my upload speeds tanked again and my download speeds were cut in half, and I could not get any work done. I had a tech appointment set up for Monday to see if someone could come check the wiring around my house, but the system automatically cancelled it because my systems were "fine". Of course they are fine at every other part of the day, but not during the most crucial time of the day. PLEASE someone help me! This is getting on my nerves not being able to talk to someone when the system can't actually diagnose my issue.

Edit to add: I am on the GIGABIT EXTRA plan with upload speeds of up to 35Mbps(but I actually get about 40). My personal PC that is hardwired into my network extender usually gets anywhere from 600-700Mbps, and the PS5 hardwired into the modem gets around 860Mbps. I noticed the issues beginning last Friday, May 2nd, but they could have been going on for longer, just not to such an extreme amount.

Thank you in advance.