How many transactions IOTA network can handle per seconds? What about the scalability issue? Did dev iota stress test the network?
What I heard is that in one stress test tps reached about 1000 tps which was the cap the devs set up for that stress test. You can ask about it on the Slack.
Yes, this information is correct.
To the original questioner. IOTA is scalable, that means that with the number of transactions and nodes the number of transactions which could be processed per second increases. Theoretically there is no open end when it comes to the number of processed transactions. One important part in my opinion is that there must be big industry nodes.