Or Stellar, with transaction times in the second range and Stripe behind it.
Stellar is not a cryptocurrency. It's only partially decentralized (like Ripple) - there is no blockchain, it works with a series of trusted nodes. That makes it very easy to have fast transactions, but also makes people not very confident in it.
Also, they make me sign in with Facebook to claim Stellar (in their latest PR campaign). No.
If it uses trusted nodes why not just use Chaumian Cash, and have the trusted nodes be issuers, rather than reinvent the wheel? Chaumian Cash is perfect if you don't care about decentralization.
Honestly I think Ardor will eclipse Ethereum-- if they can get to marketing it better, the technology is light years more advanced and more secure. When the ardor chain goes live I'm hoping it is an ethereum/bitcoin killer, being able to exchange assets between child chains just makes good sense, as does some of the other tech built in.
Ethereum has had some pretty wild fluctuations over the past 24 too. Lost about £100GBP/30%(approx) back to where it was a week ago.