Great article! I had the same problem with images and I increased heap size and it worked..
Now I am trying to find the leaks but in my Leak Suspects appear this:
"One instance of “byte” loaded by “<system class loader>” occupies 74,649,616 (62.38%) bytes. The memory is accumulated in one instance of “byte” loaded by “<system class loader>”."
Do you have any tips? Dominator tree is filled of “byte”'s too..