Thanks for your constructive feedback!
The main risk with choosing to always bet the maximum is that you loose more HP for each spin. At first bet costs were 1HP / 3HP / 5HP but after some playtests it was too harsh, so I reduced them to 1/2/3... maybe it is not enough now ^^'
Another risk to take into account: curses. Enemis add some curses to your machine, so if you bet the maximum you have more chance to activate the curses.
About the audio, I might have hearing problems... 'cause I especially reduce the volume of the music so that I am able to hear the sound effects x') Sorry for that!