A quick search for issues with the emulator itself. Not sure if it's specifically what your problem is but somewhere along the way it would seem there's an issue between the emulator, your game, and/or the system.
https://www.memuplay.com/blog/how-to-solve-start-failure.html
http://rootunroot.com/blog/how-to-fix-loading-error-in-memu-emulator-solved.html
In reference, this subreddit has another thread about What I thought was the same loading error but it looks like it might be a different issue.
https://play.google.com/store/apps/details?id=simplehat.clicker This one is what Ive used for a while. But I spent the 2 bucks for no ads. Though the ads apparently don't interrupt functionality. Use it because it has randomizer for both timing and which pixel it taps. Just in case a game is watching for macros. But I don't think you need to worry about that for iron saga.