I don't know much about how BTC or ETH works, but why all cryptocurrencies takes so long to confirm a transaction. I think even 30s is too long, why cant it be instant like PayPal?
A Bitcoin transaction is instant as is a credit card but a credit card takes 72 hours to "confirm" in the system while Bitcoin takes on average 10 minutes. Try to rethink your definition of what slow is... 
