A few days ago I made a post about the optimization for Android with C3, and they replied that in the future they would implement a new runtime for Android.
https://www.scirra.com/forum/viewtopic.php?f=191&t=201217&p=1164545#p1164545
But...
When will they implement it?
And it will only be if you export directly to apk from C3, or it will also work if you export it with Cordova?