message: Increase the refresh time for the model
diff: #define BITCOIN_QT_GUICONSTANTS_H
  /* Milliseconds between model updates */
  -static const int MODEL_UPDATE_DELAY = 250;
  +static const int MODEL_UPDATE_DELAY = 2000;
  /* AskPassphraseDialog -- Maximum passphrase length */
  static const int MAX_PASSPHRASE_SIZE = 1024;
  