Input lag for large text body (>2000 lines)

Hey! I'm developing a text editor on top of this for a private project (I added some server-side processing for specific text macros, so one can add those text macros from the top toolbar or just writing them, save the text, and then a server will process that...).

The problem is that some of our text files are exceeding the 2000 lines and the editor became really slow at some point for similar large text sources (~500-1000ms input lag for each keystroke).

I've tried:

• Remove all preview options
• Hide preview (preview="edit")
• Hide toolbar
• Remove controlled input (i.e., testing the editor with no value nor orChange)
• Revised my wrapper component for unnecessary rerenders (it doesn't re-render at all when value changes).

Is there some known limitation for such large texts? Any ideas of what may be causing this?

No source file or test is named. Start by reproducing the reported 500–1000 ms keystroke lag with text exceeding 2,000 lines, then compare the listed preview, toolbar, and controlled-input configurations. Done means identifying the cause and demonstrating that large-text editing no longer has the reported input lag.