Roland FRP Nuvola sustain settings?

[monmonlilk]

Just bought a Roland FRP Nuvola, and overall it's pretty cool for the price. Especially connecting with the app seems to give so much control. But in learning to play moonlight sonata as my main goal (new to piano) and holding the sustain legal just turns out into a mess of sound since the decay is so slow and newly pressed keys agree just drowned out. Is there a way to adjust the sustain decay curve? I have tried various piano tone options (upright, grand, etc) and the sustain pedal really does it to all of them. I've also tried the various sound shape parameters too and to customize different piano tones. Can't really figure it out. It does sound better with headphones though, so maybe it's just a crappy speaker issue? Don't think that's it though.