Developers are aware of joiplay issues - they mention it repeatedly when you start the game for the first time - and its not filenames. If it was that easy they'd already fix it. AFAIK the issue is with loading animations into memory. RGSS animations come as huge ass images that are chopped up into pieces that are shown sequentially during runtime. However, Android just doesn't allow loading huge ass images into memory. Its not limited to joiplay, its a global Android issue. See
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and
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. Google has (meaning, they bought out a startup) an entire framework (
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) to display images in apps without making them crash, but using it would require basically going down many levels of abstraction and writing a standalone Android app which would render the whole point of using RPGmaker moot.