About your first video : it's september. As I said, square have had problems, clearly. It has not always been "people's connection" fault. And in september, it's clearly not surprising me.
About the second video, I'd say yes, if I'm reacting as slow as he is, I'm dead too, and I see myself outside of the plumes too. But he's slow to move, and he doesn't sprint. As a caster, you can have ALWAYS sprint up for titan extreme. It's a spell you have, it's outside of your GCD, and you can have it available for every single plume. Not using it to help yourself and still thinking you're doing your best? As I said, but it seems you don't want to hear it, you can still improve yourself to react faster and dodge better, instead of making videos complaining how bad your lag is. By the way, it's a matter of way of thinking. If you prefer blaming external factors, you will just clearly stay where you are. But if you think that you can deal with it by doing better....Well, in this case, you'll beat titan