deys, I do not know about you, I imeeno shows what really works at the moment. On my current firmware devaysa (signature), there is no possibility to include ART in settings, there is only the possibility of flash archive of custom rekaveri that includes ART, after which the firmware application shows that it works. It happened that after ART core flew firmware, it is seen by recreating the Dalvik cache speed, which shows the program.
If I brush my Dalvik cache, though from rekaveri, though his hands from the file manager, then after the restart he will again be recreated. But the difference in the time of its re-creation. In the transition to ART it is going on much longer.
I have run out of arguments and ways of explaining the differences between the work program. ))
You start to get to know the topic of your firmware devaysa whether there is any ART you drank it or manufacturer.