I am wondering why this APP becomes slow when there are too many inactives and I think I find some clues after several testing. There must be a leakage in this APP related to the player's avatar and UNITY3D.
One of the crash log is as the following picture. You can see that this APP is loading every player's avatar in a for loop. It allocates some local references in a loop but the programmer forgets to free them in the same loop.
I don't think JAVA's garbage collection will do it for you so you have to free your local reference by yourself.
GLU, please do something about it.
Please also note that eating too much memory will cause this application become very very slow even this application doesn't crash.