Where does the bug appear (feature/product)? Cursor IDE Describe the Bug The beforeSubmitPrompt hook infrastructure reports extremely long execution times (7-9 seconds), even though the actual hook script completes in under 10ms. Command: node ./hooks/log-prompt-test.js (7485ms) exit code: 0 Curs…

Hey, thanks for the report. This is a known issue caused by Windows process startup overhead for hooks. Even minimal hooks can be noticeably slower on Windows than on macOS. The team is already working on improving hook performance on Windows. See also: Similar report for the beforeTabFileRead hoo…

Hello @deanrie , is there any news regarding this issue?

Hey @Iheb_HASNI ! We’re shipping some speed improvements to hooks where we we no longer launch a full instance of the user’s Zsh shell. I have a feeling this is where the latency is coming from in reporting the delay. It’s on nightly now if you’d like to give it a try!

Hello @Colin Using the nightly build of Cursor, we’ve observed a significant improvement in hook execution time. The hooks now take approximately 0.8 seconds, with a maximum of around 1.2 seconds, which we consider a strong performance gain. We’re very happy with these results. Do you have any ind…

2.4 is around the corner, sorry I can’t be more specific than that. :slight_smile:

Hook execution reports 8+ seconds delay despite actual execution taking only 5ms

Support Bug Reports

Topic		Replies	Views
beforeTabFileRead hook is extremely slow on Windows and events get queued up (works fine on macOS) Bug Reports	1	98	December 24, 2025
Hooks are not working anymore Bug Reports	4	449	December 9, 2025
beforeTabFileRead is still inherently slow on Windows despite reported hook execution improvements Bug Reports tab , hooks , performance , windows	1	57	March 18, 2026
Cursor Hooks On Windows Bug Reports	6	505	December 29, 2025
Project-Level Hooks Fail to Execute on Windows Bug Reports cli	7	421	December 20, 2025

Hook execution reports 8+ seconds delay despite actual execution taking only 5ms

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