I just switched to comcast x1. No dvr. It is slow to react to remote. If I hit 8-1-1, It does 8...1...1. I replaced cables, HDMI cables , rebooted etc. Im convinced the answer is to go back to FIOS. I never had a problem with fios using the same cables I had when I switched to xfinity. I switched because it was cheaper. I have both the hi-def box and the small $2.00 low def box. The lo def box has no delay at all and it works fine all the time. I dont know if its becase it doesnt have to report upstream or if it just it doesnt have the overhead of the x1 operating system.
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