X1 so slow doing everything

... X1 ... slow response to the remote, slow DVR, slow channel switching, etc. ...

With older legacy cable boxes, when the box received a signal from a remote it acted on that signal directly. I believe digital adapters also work that way. But X1 boxes are different.  When using a remote to control an X1 cable box:

1. The remote sends a signal to the box
2. The box uses an internal modem to send that signal to a server at Comcast and ask for instructions
3. The server at Comcast decides how the box should respond and sends back commands and data
4. The box receives the commands and data and does as instructed

This design means that X1 is very flexible, but more delicate. If any of the links in this more complicated chain are weak or broken, the response to signals from the remote is sluggish, or fails completely. When that happens you can try changing the batteries in the remote, rebooting the cable box, and checking the coax (or fiber) line and connections.

If the remote still doesn't work, you'll probably need to ask Comcast to send out a premise tech to troubleshoot the problem. If the tech finds bad coax, splitters, amplifiers, or connections in your home (even if Comcast originally supplied them) you'll probably have to pay for the visit ($70-$100) unless you have their Service Protection Plan (https://www.xfinity.com/support/articles/service-protection-plan, closed to customers that don't already have it). If the trouble is due to a faulty Comcast rental device or anything outside your home you shouldn't be charged.

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Hi, @Sdsosg, I'm glad to hear you recently upgraded to the X1 platform, although the issues you're having do sound really annoying. I'm sorry it hasn't been a fluid transition, but I can definitely help make sure we get you sped up. When X1 is running right, it takes a backseat to no one, so I'll stick with you until we find a resolution. Have you reset or refreshed your cable box at all recently? You mentioned that you changed the box as well, were you having the same issue before that? You can also run some troubleshooting steps right from the My Account app, it's super convenient and can identify a ton of issues pretty quick. The functionality of the app is awesome, so I would definitely recommend checking out those troubleshooting tools when you get a chance. You would just need to select the impacted service tab at the bottom of the overview page followed by the troubleshooting link.

We switched from Tivo to X1 6 months ago and had the same problem.  Seconds would pass before the X1 box would respond, sometimes longer.  We are in a new neighborhood with new Xfinity Cable feeds and amplifiers.  We found the delays much worse during peak viewing time.  The cloud based approach for set top boxes is not practical unless the connection is on fiber, the Xfinity data centers are closer to the user, and the server capacity is increased.

We lasted 2 weeks on X1 before the family had enough of X1 and we switched back to Tivo.  From my reading the forums, the only X1 box that works without acceptable delay is the DVR box XG1 or XG2, but they are awfully hard to get as Xfinity is pushing customers to the cloud-based design.   As stated above, the cloud idea provides flexibility, but Xfinity's infrastructure is not ready to support this kind of solution.

In the same boat. Wi-Fi based. X1 box constantly experience several seconds delay at start up i assume its a "buffering" issue