I didn't read this thread in its entirety, but Titan HM/EX is one of my most favorite encounters of this game.

When I did my first few encounters with Titan, I thought for sure either I was a terrible player or my latency was an issue. (I'm on Hyperion and I'm in Japan, so I have higher latency by default than other players in NA region...)
However, months later since those first fights, I've got no problem with the mechanics of how the fight works and how to avoid stuff. My real complaint is that it's probably too mechanical. I kind of wish it was more random, but I understand the difficulty of some and the order of things help predict what's coming next.

I'm a PC player with an aged i7 machine paired with a GTX690 GPU (+SSD for load times).

Admittedly, I will make a mistake and get knocked off or get hit by a plume when I'm not tanking. It happens...