[Bug] Severe Performance Lag When Single Page Exceeds 1000 Lines

[rooct]

Bug Description

When creating or opening a single page containing more than 1000 lines of content in AppFlowy, the application becomes extremely unresponsive or completely freezes.

How to Reproduce

Create a new page/document
Add content exceeding 1000 lines (can be dummy text)
Observe performance degradation as line count increases
At around 1000 lines, the UI becomes nearly unusable

Expected Behavior

The application should maintain reasonable performance regardless of document size, with smooth scrolling and editing capabilities.

Operating System

macos

AppFlowy Version(s)

latest

Screenshots

No response

Additional Context

No response

[LucasXu0]

@rooct Is there any specific content contained in your single page? I imported a 3k lines markdown file, and I didn't notice any performance issues.

text.md

[rooct]

@LucasXu0 not import ,only paste,you can try