Twilight Princess 4K Issues

I'm having a couple of issues with TP 4K, for one, my game doesn't actually save even though it says it does. I'll save the game and close the emulator, only to come back to it and my save file is gone. Also i'm unable to change the Left Trigger button which is mapped to speeding up the game's frame rate. I tried to change it so it's the Left Bumper instead that does that but it always resets back to the left trigger and it's annoying. Any help with these issues would be greatly appreciated!