When Xamarin become free, I try it to make an Android game (for learning purpose).
It's just 2D game but I notice some freezes.
It's make my animation not smooth.
I minimize the freeze by dong frequent gc when freeze accepted (when AI thinking next move).
Also I think OpenGL resources like textures management better handled by ARC, not GC.
The tag is not SIlver, but I hope I can use Swift ARC (not GC) in Silver on Windows and Android NDK.