There is a problem with zotero's zoom function
I don't know that Zotero's zoom function has problems from time to time. For example, when I want to zoom in on a certain place, I hold down Ctrl on the keyboard and slide the mouse wheel, and I find that it does not work properly. This happens from time to time. I don’t know if everyone has this problem.
This is what I have observed, making the navigation in the PDF Reader quite slow:
https://forums.zotero.org/discussion/100989/pdf-reader-time-delay-when-switching-from-scrolling-to-zooming
I still face this issue in Zotero 7 Beta.