After some testing, I can confirm that using C3's build for apk (debug or not) results in SERIOUS performance issues when compared to what I was getting from C2. Exporting it as a Cordova project and compiling it with Reinarte has better results than C3 apk but is still worse than the same proccess coming from C2. But the play store will only register support for the new api if you go for the C3 build. The apk is also twice as big compared to C2.
I was almost ready to release the game I made in C2 on the play store but now have to deal with this BS. Is there at least an update scheduled for the compile -> Cordova project to support the latest android api? Because I might barely be able to work with that.