I think TRX is still the fastest in my opinion. i often use TRX even low cost. it looks like you have to enter TRX into the list because TRX has been tested and provides concrete evidence in every transaction
Tron (TRX) is probably the fastest cryptocurrency in existence. Based on my previous experience, a transaction took an average of 3 seconds to settle on the Blockchain. That's almost instantaneous compared to other cryptocurrencies' transaction confirmation times. I like the fact that Tron's fees are ridiculously low (unlike Bitcoin or Ethereum), making it practical for "De-Fi".
While Tron is extremely fast, it still has some issues surrounding it. For instance, the Blockchain network is centralized adding the risk of a single point of failure. It is said that Justin Sun is directly tied to the project with several SRs (Super Representatives) that are under his control. As of now, Binance has the largest stake of TRX on the Blockchain. It shows us the level of centralization inherent in the project. This is what you get when you sacrifice decentralization for speed and low costs. At least, there are a plethora of cryptocurrencies to choose from the market. People have the option to choose another coin if they don't find Tron suitable for their needs. Basically any cryptocurrency is fast if its network doesn't have much activity on it. Their speed is put to the test when the network becomes congested. How fast your transaction will settle on the Blockchain will greatly depend on this and several other factors.
If you're still on the hunt for the fastest cryptocurrencies in existence, then the top 5 would be Tron, IOTA, NANO, Constellation, and Hedera Hashgraph. XRP and XLM are fast too, but not as fast as DAG-based or DPoS-based cryptocurrencies. That may change as Blockchain networks improve over time. With many options to choose from, people can experience a relief from Bitcoin's high fees and slow transaction confirmation times. Just my opinion
