I could probably try experimenting in T5 this week to see how the snake buff affects SF. I have to say RS affecting Shadow Flare is pretty noticeable though. In my group if I can get off a perfect setup rotation during RS at the very start of the Titan EX fight he'll do his first jump before the 2nd mountain buster. Missing the shadow flare within RS timing or sometimes even just a fester gives him just enough HP to mountain buster and jump immediately after. Then any time we start with my RS on cooldown he won't jump for a good couple of seconds after using the second mountain buster.Same during the heart phase, if I have RS available at the start and get off even a decent rotation the heart will usually break when he drops the bombs. A bad rotation or no RS and he'll break during his landslide after bombs. Although sometimes he skips the landslide and uses Tumults instead (both are kind of funny to see with his animations mixing up). Personally I think him using the landslide as his heart breaks is ideal though, gives the healers a few more seconds to top everyone off before he uses Earthen Fury.

I just hate when my swift/SF macro decides to ignore some part of what it should be doing. Never had that problem with the macros before the most recent hotfix