Ok, I deleted the HB/Routines/OracleII folder, and the HB/Settings/OracleII folder just to be sure I got rid of all OracleII related options and files. I left everything at the stock streamed options. I had Tyrael set to 25 tps with Continuous Healing Mode enabled (checked). I did the Celestials fight. Here's the log, still with me in last place with healing, and it still felt like the routine was "slacking" with casting. During heavy raid damage I saw a few Riptides that were cast, I didn't *personally* see any single target heals that were cast (not saying they weren't, just that I didn't see them), and I don't recall seeing any Healing Rains get cast anywhere. I watched the entire fight the whole time and there was a lot of things going on.
I looked back at my recount and it does show that I did cast some other spells, but as I said, I never really saw them, but I can just chalk that up to my bad vision and the fact that some things were being cast so fast that I didn't see them get cast.