The following transactions can take up to a minute to be executed:
Debt payment
Protocol debt rollover
Swap
Send
This is completely normal, and it's just to be sure that the transactions are happening as expected.
If you intend to do several different transactions and try to execute them one after the other, you will see all these transactions in a queue in the Pending requests part of the Activity section. They will be executed in the same order that you placed them in. If one of them fails for any reason, the next one will be executed.