Additionally, I gave up on trying to use my harmony remote as it was operating too slow compared to tivo provided remote. I tried different delays, eliminting delays...etc. If you get it working and it is fast enough, please post the device delays and what model harmony you have. My harmony remotes are older, but I don't expect that a new one would be any faster.
Roamio Pro, wired ethernet
Mini using MOCA (from the Pro)
on Cablevision Raritan Valley system (Central NJ)
w/ Cisco PKM803 CableCARD on firmware 18.104.22.1681
*** 2013 newbie to Tivo ***