I think paypal still fast in transaction if you compare the speed of the transaction bitcoin transaction it takes 10 minutes before you receive..
Wrong. Transactions take 1-3 sections usually. Confirmations take 10 minutes on average.
Nowadays the transactions of bitcoin are taking much longer time which sometimes become irritating when you need money urgently, and on bitpay while paying for a service it will be a problem, because bitpay wait only for 15 minutes for the first confirmation.
Then stop being cheap and include the recommended fee.
it's called bottleneck when there's so many unconfirmed transaction but the block only 1mb
Even if the block size limit was 1 GB it can't be helped. Certain entities would bloat the blockchain with spam occasionally.