Zotero Reader rendering too slow

fanchengyan

## Problem

The reader of Zotero seems to be rendering the PDF too slow. It always takes a few seconds to render the PDF after I try to scroll quickly for a large PDF file.
This is not a problem when I use other PDF readers like Adobe Acrobat Reader or PDFgear.

The video in [GitHub issue](https://github.com/zotero/zotero/issues/4809) shows the problem.

## Environment

- Zotero version: 7.0.9-beta.5
- Hardware: Mac mini M2
- Operating system: MacOS 15.1

dstillman

Can you email the PDF in question to support@zotero.org with a link to this thread?

martynas_b

@fanchengyan It seems that even moving the scrollbar lags for almost a second in the video… Please test again after doing the following two things:

1) Disable all third-party plugins.
2) Check if Settings → Advanced → Config Editor → layers.acceleration.disabled value is set false?