@P5music: In the few lines you've presented here you indicate (via 'default menu.c32') that you you want to use the "simple menu system". Was that actually working before you started tweaking parameters?
To me there is a contradiction here, on the one hand you want a menu, meaning multiple labels to choose from, and OTOH you want to boot straight, without delay into a single, default option. Which one is it going to be?
You might want to share here your full config file, so that it becomes a bit clearer. My hunch is that you'll have to strip down the config to a single label option, and then adjust the timeout etc.