bug：桌面端左侧对话记录的 load more 很卡，会抽搐。

[RunMintOn]

Description

点击 桌面端左侧对话记录的 load more ，很卡，会抽搐。

Plugins

No response

OpenCode version

1.19

Steps to reproduce

No response

Screenshot and/or share link

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Operating System

No response

Terminal

No response

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• High CPU usage (100%+) during LLM streaming in long sessions due to O(n) text buffer rendering #6172: High CPU usage (100%+) during LLM streaming - O(n) text buffer rendering causing performance degradation
• [FEATURE]: Paginated message loading for long sessions #6548: Virtualized scrolling + paginated message loading for long sessions - direct feature request for this problem
• Long prompt history stalls the app, long load time #3746: Long prompt history stalls the app, long load time
• Severe scroll lag in VSCode/Cursor integrated terminal on WSL2 after large output (unusable for minutes) #7893: Severe scroll lag in VSCode/Cursor integrated terminal after large output
• TUI freezes for ~10 seconds periodically on WSL2 (regression in v1.0.129) #5361: TUI freezes periodically (also affects conversation loading)

The root cause appears to be O(n) rendering complexity in the text buffer that recalculates for all content, not just visible content. This is tracked as a performance issue in the opentui component.

Feel free to ignore if your specific case differs from these.