Text lag/slow when Documents Folder is present (package)
Since 15.03 there is a Text lag after opening documents that are in a folder that has a Documents folder. This delay has gotten worse in 15.1. If you're working from packaged InDesign folder, try deleting the document fonts folder inside it. Lagging was caused because of a double up in fonts on my computer. This took a month of testing by myelf and IT team to finally figure out!