Terrible internet during peak hours

Hi @user_Hsta I know how important it is to have good internet! you've reached the right place for support! Does it seem like anytime you're doing a specific activity this is continuing to happen (i.g. video calls, using a VPN, gaming, etc) or does it seem pretty random? Have you been able to consistently confirm the connectivity issue on more than one device within the premise? 

Same here issue I’m facing from july 2022 when were made upgrades to o the hub to our neighborhood. Based on techs sent to test signal and all troubleshooting and captures all does point to shared hub, is oversubscribed and increased speed for upload to gig and upload to 235mbps did impact entire hub because the hub has over 1.2k addresses (users served)  so anytime when is large usage that hub can't fulfill the speed from the plan and drops to 1/5-1/10 from gig and upload the same or sometimes upload is more stable but download is just dies until even vpn would timeout. None of tech visits or support is able to solve it knowing that the issue is not from my end but rather from the hub that is oversaturated and can't withstand the speed and stability of the signal during high usage or peak hours when majority of the users does use internet. That hub is over saturated and user's subscription is way over capacity. If were predicted usage and capacity then should be allowed max speed to end users based on all that utilization during peak hours with an error rate of max 20% but not oversubscribed and during peak hours users can get 1/5 or 1/10 of their speed or even experience outages. This stats does point out that plans provided and usage by users is over capacity of the hub 1200+ users on the hub) by minim of 5-10 times. That planning has been made when the speed provided for users was bellow 350/150mbps with upload of up to 35mbps and 4k were not present for streaming to be able for the hub to handle but with adding more speed to end users that did impact hub capacity for peak hours and weekend when usage of users increases. During weekdays 8-5 when users are not using service to stream, download or surf internet then is stable since hub is shared so can share speed as needed. To be noted that the hub is "SHARED" so no dedicated line would improve service speed during peak hours because is same hub and nothing would change. Comcast knows that and no way plan to add a secondary hub in order to solve capacity and does know that only fiber(is just upfront the line and no plans to bring to this hub when all around does have already fiber from att) would only be able to handle that speed for subscribers since would be new equipment with required support for gig and not a legacy coaxial cooper 2 wire equipment that were meant for tv and not for gigabit internet (gig is for 4 pairs cooper and not single pair as comcast is advertising). Comcast/xfinity just are able to provide some credit if u contact them during peak hours meaning are aware of the issue and is shared this even by their personnel but keeps running like this until u give up or would be a government agency to enforce it (some type of consumer protection agency) but all ISP has control of it and are able to squeeze money for false advertising and misleading information. Their true gig is not gig on legacy equipment and if u do use a good firewall and filter packages u can see that is half even during normal non peak hours. 
Not sure how can that be pushed to be replaced or how can be fiber enabled on this hubs in general. 

still experiencing this daily.....can any other employee help me out here?