It takes me 3 seconds but doesn't interfere with anything on my computer. It's having to make a connection and talk to Adobe each time. You could try not quitting Acrobat often. I very rarely quit Acrobat, just close my documents.
I have noticed that on creative cloud desktop, I am all the time connected to my adobe account (the blue icon is always working and does not disconnect). It would be great to have the same for Acrobat Pro.