The only reason anyone is dying to Titan now is bad skills or a sudden huge lag spike (The kind where your game suddenly skips). All his moves are entirely predictable, you should have memorized when to start moving away and spreading out for plumes seconds before he even starts and keep on moving, don't stand still if it helps. Be mindful of where everyone else is also and where they're moving to.
I'm not saying lag isn't an issue, but a small latency issue like this shouldn't be why you're dying to Titan.