There are many post discussing whether GCMS notes delay processing of your file within these forums. Here is just one of them:
https://www.canadavisa.com/canada-immigration-discussion-board/threads/can-gcms-notes-delay-the-application.509942/
https://www.canadavisa.com/canada-immigration-discussion-board/threads/can-gcms-notes-delay-the-application.509942/