Input lag/delay while gaming, de-sync issues in some games - Xbox and PC

@XfinityKei​ Thank you for responding. My setup is like this: I have a CM2000 modem currently. Connected to this is an Edgerouter X. Connected to the Edgerouter X are two ASUS routers, both in AP mode in order to create a Wi-Fi mesh. All this had been setup before my issues.

Both my PC and Xbox are hardwired into the Edgerouter. Everything else is connected to my ASUS mesh system via Wi-Fi. At any time of day, I can have anywhere from 1-12 devices actively using the network, depending on who is home. Regardless of how many devices are active on the network, the issues persist. My bandwith usage is only at capacity when downloading large files, which isn't a common occurrence, and usually tends to only take an 30-40 minutes at most. I am on the 800mbps tier with Xfinity.

I have QoS setup in my router, so my bufferbloat is very low, and no device is allowed to hog up more resources than it generally requires.

All the above devices are connected to a surge protector. There is a 6dB attenuator attached to my modem since I was told my signals run hot. The cable is split at the grounding block outside, which is in a locked cable box outside. The line runs directly into my house to the modem from the grounding block and there is no wall plate.

Thank you for those details, @mmoqeet2! Our team would like to help take a closer look at this connection issue. Can you please send a direct message with your first and last name and the address? 

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We would be happy to check on the signal levels of your modem and check out the area node health to see where that least us, @mmoqeet2. Our Technicians that come to your home are the ones to put in any tickets for area work or upgrades. Please send us a direct chat message with your full name and complete service address to “Xfinity Support”. To do so, click on the chat icon located at the top right of this forums page.

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Hi there @user_a0fcf0! Thank you for reaching out to us here via Forums. I am sorry to hear that you are experiencing issues with your internet signal. Is this via a hard wired connection or via WiFI? 

My Arris SB8200 modem is connected directly to the sidewalk connection coming into my house and that connection is not shared or split.  I have an Ubiquiti UDM router/switch connected to my modem and my PC is hard wired to my router.

Prior to 2022 Q4 I was not having any latency issues.  In Q4, comcast notified me that they were "improving" the infrastructure in my area, which was when all the latency issues started.

We appreciate the additional details, @user_a0fcf0. Just to make sure we rule out any problems with equipment. Do you have the same issue when you bypass the router and connect your PC directly to the modem?

I'll give that a test tonight.

@user_237215​ No. There is definitely a congestion or routing issue that is not being addressed. I had a tech come out and visit twice, and all that was done was just some moving around of wires on the poles. The tech told me he couldn't do much besides that. The state of the equipment being used in my neighborhood is just down right sorry. I moved on to another ISP in my area, and their equipment is even worse. However, I get a much better experience during off hours with them, which leads me to believe it is some type of congestion issue with Xfinity because the issues abound no matter what hour of the day or night I play. So many of the nodes in my city proper (not the metro or suburbs) seem to be oversubscribed by a significant amount. Lot of jitter, de-sync, packet loss issues abound. It also doesn't help that games these days have netcodes that try to hide the issues.