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Re:Text Showdown: Gap Buffers vs. Ropes by _dain_ on Monday October 09, 2023 @02:02PM (#37823253)
>The rule of thumb I have seen is that anything under 100ms is perceived as instantaneous by a user.

for typing characters into a text box this is not imperceptible. it should happen in a single frame.

Re:Text Showdown: Gap Buffers vs. Ropes by deagle50 on Monday October 09, 2023 @03:27PM (#37824310)
And it gets more perceptible when moving the caret (more pixels to track and you're actively tracking).