I just about always use EVODSs, (with an MVP), the EVOD1 I believe, so I can't comment on the the EVOD2. But with the EVOD1, I never have any burnt taste at all. Then again, I do build my own
coils.
I have noticed that the packaged coils can have a burnt taste, and that the problem is down to the wick. With any new packaged coil, the first thing I do is change the wick for one of my own. It makes a far better vape and eliminates any potential burnt taste. Even though I don't know about the dual coil EVOD, you could try changing the wicks.