why does Sierra delay new folders, also delay when pressing return/enter

Shut down your Mac and restart it in "Safe Mode". To learn how to do that please read: Try safe mode if your Mac doesn't finish starting up. Compare how your Mac works in Safe Mode to how it has been.

Then, restart normally. If the same problem returns, please read the section If an issue doesn't happen in safe mode for Apple's recommended actions.

Finally, you can temporarily create a new User Account, and log in to that account to determine if the problem also exists when logged in to that Account. To learn how to do that read How to test an issue in another user account on your Mac. When you are finished troubleshooting, you can remove the temporary User Account by following these instructions: macOS Sierra: Delete a user or group. Before removing it, confirm you don't need any of the files you might have created in that Account.

Let me know what you determine.

FWIW, it's not normal.

Please install and paste the results

http://etrecheck.com/

for what it's worth.

dinhr wrote:

Why would just starting in safe mode clear up the problem?

I don't know how to find the section you refer to, ("if an issue doesn't happen in safe mode"). I would like to read what Apple has to say about that.

Hi ,

To , create a new folder : shift + command + N condition safari must be closed , to name it we click on it bottom side and type inside the field , so definitely some time is consumed .

Is this a keyboard issue or malware ?

tygb, in case you didn't notice the problem has been solved.