What is the transaction speed of Ergo?

In the realm of cryptocurrencies and decentralized finance, the transaction speed of a blockchain network is a crucial metric. Could you elaborate on the transaction speed of Ergo, specifically detailing how it compares to other popular blockchains? Are there any specific factors that contribute to its speed? Additionally, has there been any recent developments or improvements in this area that Ergo has implemented? Understanding its performance in terms of speed is crucial for potential investors and users alike.