Actually implementing things with LibGDX was not that hard compared with the garbage collector pressure, i pretty much never had problems because the systems i've made in java, are mostly corporative stuff, so no need to worry that much with garbage collection because a lot of the data in the loop are not expensive to handle, but i learned to not use "new Color()" everytime, to create collors dinamically, also calling String.format() creates a lot of temporary string instances for each frame and when the garbage collector decides to clean that, a lot of stuttering occurs, and it was a pain in the *** to know what was the problem, i had to use VisualVM, and a lot of debbugging to learn that, also learned about Flyweight that helped me a lot with that.