Based on our investigations after communicating with users, we’ve come to the conclusion that this issue is not related to OS 10.15.x
Closing this thread.
Adobe InDesign team
An error occurred while saving the commentThomas Brando commented
Indesign running very slow on my brand new iMac (Catalina). Much slower than my tower from 2008 on which I only could run Indesign CS6. Every time I move an item, click on a text frame etc. So disappointed ... Hope it will be fixed soon.