I need some help understanding how to play this game. It seems to take forever to charge an attack, you can't attack on anything less than a full charge and blocking - which you need to do frequently - seems to make you start charging all over again.
Wait for the yellow bar to fill first and then press J to charge and execute the attack! If you're pressing J all the time, that's when it's super slow. The game is quite challenging but I hope this helps!