Slow remote

​Remote is slow or dragging replaced batteries  rebooted  swapped out box still same issue ...

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 and changing the batteries in the remote and rebooting the cable box doesn't help, check the coax (or fiber) line and connections.

If the remote still doesn't work properly, 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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Half the buttons on my remote are working, and half are not. 
The buttons that are not working are the:

-channel up/down

-last

-the number buttons

All the other buttons work. I’ve gotten a new remote. And paired it. And problem is exactly the same? 

@user_5d56c9 Thank you for reaching out to our Digital Care Team. I appreciate you completing those steps before reaching out. Have you tried to pair the remote again. If not, here are the steps to do so: https://www.xfinity.com/support/remotes. Let us know how it goes!