You're beating a dead horse alright, but it's the wrong one.

Garbage collection has never had anything to do with poor UI performances, and everything to do with making poor code stutter. When the GC starts hitting your framerate, it means you are creating far too many objects and far too frequently. Before ICS, android implemented the incremental GC that runs more often but for "negligible" sub-1ms lengths.

If you absolutely need 60fps, make sure the GC never gets to do any work and start monitoring your own memory through buffers, just like you would in any other language.