Give or take, how long do you wait to receive your coins? At what point do you start to become suspicious?
It depends on currency. For BTC it takes up to several days or even weeks, for ETH - up to several hours, for DGB it could be 1 min. So you need to check every coin separately for transaction time
Yes its true. But i dont agree that etherium transaction takes several hours.
As i know and i send etherium for many time, if i put default gas price and it only takes around maximum 5 minutes.