Posting this really quickly before bed, so forgive my mistakes.

I had a really tough time with titan plumes pre 2.1 in titan HM. When 2.1 came out it somehow seemed to fix all my issues and I dodge titan hm plumes like nobody's business.

I finished Garuda ex recently, no latency issues...however I performed Titan Ex for the first time and through all tries, I can't get past 10 seconds of the fight because stacked weight of the lands seems to put my character in slow motion/pauses.
Another member of my party was having the same issue. You would think WOTL would be easier to dodge if everyone just stacks in one place, right? Neh.

I run it on a laptop with a good graphics card and cpu. I don't have lag issues with any other primal except this one as far as I know.

I am sure other people have this problem, as I've seen one other post in here about it, but I am adding to the fact that there is more of us. So please, Squenix, if you can do anything about it I'd appreciate it.