The speed is incredible because the RefleX algorithm does not drive the whole network to approve every single transaction. However, it will take time if the receiver takes time to allow one. For business, the speed is important but security is also very predominant, they don't want to send funds to a wrong address which are not recoverable at all. This is where the common people and business are having big procrastination.
Psyche allows each receiver to accept or reject an incoming transaction and users can simply reject a payment if they don’t want to receive or they are not agreed on the incoming amount. I think it is something unusual but interesting decision

won't that hamper a troublesome system and transactions take a long time? if they do it like that, is it done manually? and what is the purpose for such a product to be created?
An interesting idea but a little awkward when you think about it logically
So is there an option for the type of transaction? and if it's for personal use will it be done quickly according to their request? or how does the transaction work detail system? this really confuses me, or how is it different from the transactions that are commonly done?