MCH is honestly not much of a reactive class considering there isn't really a random proc you have to deal with, you may lose a bit to GCD clipping here and there but it's not super noticeable.

I had a lot of lagg yesterday during Titania EX and even though I was clipping CDs frequently because of the higher ping I was still able to get all of my heat blasts 95% of the time and not lose any gauss rounds and split shots.

I've only been playing the class for maybe a couple weeks, but currently the class plays out, at least for me, in that you can easily plan out your rotations by looking at your hotbar and the cds on your drill/air anchor, looking at your battery/heat gauge, and then deciding where to go from there.

If anything it plays more like a planning class where you anticipate the best places to time your skills and whether you can squeeze in certain skills without overcapping on resources.