Do MCH's oGCD abilities seem unresponsive to anyone else?

[RichardButte]

You're hitting your oGCDs before the previous animation lock is done, so they don't go off. Pay attention to the timing. You can only hit 2 oGCDs max between your GCDs and only one during Rapid Fire. All abilities have variable lengths of animation lock that prevents using other abilities at the same time. It also depends on your latency how fast the server registers that you've hit an ability so your mileage may vary.

...Then the game needs a timer similar to the current GCD indicator that appears over oGCD abilities to indicate when they're not available.

The entire purpose of the GCD spinner is to show players when pressing a button at that time isn't actually going to do anything. If they can't do this, then they at LEAST need to display an error message and play a sound when we hit an oGCD ability that doesn't activate.