While I also don't like fighting systems that test your connection as much as if not more than skill... there is one practical solution that's been mentioned.

Titan's rotation is fixed. (Most fights in the game are like this, actually). It's possible to anticipate and start moving before Weights or Landslide come out. I do this even though my connection is good enough not to require it--it comes naturally with enough practice. There are guides that break down his exact rotation, but even just a good friend on teamspeak can tell you what's coming next. Also, your side-profile thing says you're maining BLM... if that's accurate, don't forget about sprint. For us mages, it's free.

Also I see you're on Balmung... I'm running with my static over the next few days but this weekend I could try to help you clear titan EX, maybe get a few friends to help too.

Anyways, good luck!