I have the same problem, 190-200ish depending on the run.
I always stack because I assume a party will whine if I'm not stacking. Usually I'll dodge the plume, cast my next spell and start running once I pass the 80% or whatever cast bar where you can run and still have it go off. But I end up with some interrupts when dodging the landslide. I need to use Manawall more I guess. Also need to start holding RS for the egis rather than using in heart phase.
I've been wondering whether using Scathe when dodging would be helpful, but right now my biggest DPS issue seems to be the fact I stack too much.
Some parties can be pretty harsh, had one complaining the two LNCs were doing more DPS than me yesterday, and I couldn't even join a party in one of my linkshells unless I could do 250 DPS, which is crazy. I've always put dodging before damage on Titan but now I will take more risks to squeeze out that extra DPS.