"seconds", you say?
Lucky you.. I have been measuring some of my pop up delays in minutes.
I bought the two recyclers for the guild shop this morning... when it came to doing the level 3 (1 hour) upgrade I did one after the other. After both upgrade clocks were running I compared them and the difference was almost four minutes.
Geologist pop-ups have been appearing like this...

...for most of the day. I have a similar problem with Explorers. Also had issues with Explorer mails failing to show icons of buffs and resources properly and all sort of other mess. Tried reporting these, and other lag induced problems only to be told there were no other reports of lag and asking me to provide a speed test report.
Really starting to not appreciate being blamed for things going wrong right after a major update that has many users reporting issues here in the forums. It's down right insulting.