Slow File Edit, up to 10min wait

[KevinLourd]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Cursor times out like 60s up to 10 min everytime it does a file edit
See this Loom: https://www.loom.com/share/f92adb01f9c145fa85451a38917d77cb
Bug introduced in recent v2 updates. Same computer, same RAM, no issues before the v2 upgrade

Steps to Reproduce

Just ask Cursor to edit a file.

Expected Behavior

Should be fast as before

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.0.77
VSCode Version: 1.99.3
Commit: ba90f2f88e4911312761abab9492c42442117cf0
Date: 2025-11-13T23:10:43.113Z (2 days ago)
Electron: 37.7.0
Chromium: 138.0.7204.251
Node.js: 22.20.0
V8: 13.8.258.32-electron.0
OS: Darwin arm64 23.5.0

For AI issues: which model did you use?

Claude 4.5 sonnet

Additional Information

Macbook Air, M1, 8gb RAM

Does this stop you from using Cursor

Yes - Cursor is unusable

[deanrie]

Hey, thanks for the report. I know this is frustrating, especially since everything was working fine before v2.

To help debug these timeouts, could you please share:

1. Request ID: after a slow file edit, click the chat menu (top right of the chat panel) → “Copy Request ID”
2. Extensions check: CMD+Shift+P → “Developer: Open Extension Monitor” → check if any extensions show high CPU usage or long activation time during the hang
3. Process info: during a timeout, run CMD+Shift+P → “Developer: Open Process Explorer” → take a screenshot of what’s using resources
4. Network test: Cursor Settings → Network → “Run Diagnostics” → share the results
5. MCP servers: do you have any MCP servers configured in Cursor Settings?

Quick things you can try:

• Disable HTTP/2: Cursor Settings CMD+, → search for “HTTP/2” → enable “Disable HTTP/2” → restart Cursor
• Test without extensions: run cursor --disable-extensions in the terminal to check if extensions are causing the slowdown

Let me know what you’re able to collect. This will help us understand if we should escalate this as a v2 performance regression.

[KevinLourd]

Thanks fo quick reply.

Request ID: 1a7bda03-9d0d-4f02-b4f8-66896aee48e1

Extension check: I don’t see “CMD+Shift+P → “Developer: Open Extension Monitor””

Process info:

Network test:

MCP servers:

[deanrie]

Thanks for the network diagnostics! They show two issues that are causing your timeouts:

1. Primary issue - network proxy blocking Agent: the diagnostics show that Agent streaming is being blocked by an HTTP/2 proxy. Please try disabling HTTP/2:

   • Open Cursor Settings (CMD+,) → search for “HTTP/2” → enable “Disable HTTP/2”
   • Restart Cursor
   • Test a file edit

2. Secondary issue - memory bloat: your sharedProcess is at 4.61 GB, which is abnormally high (it should be under 100 MB). This is a known v2.0 globalStorage bloat:

   • Close Cursor
   • Go to: ~/Library/Application Support/Cursor/User/globalStorage/
   • Rename or backup the files state.vscdb and state.vscdb.backup
   • Restart Cursor

Disabling HTTP/2 should fix the Agent timeouts. Cleaning up the storage will improve overall performance. Try the HTTP/2 fix first and let me know if file edits work after that.

[KevinLourd]

@deanrie

~/Library/Application Support/Cursor/User/globalStorage/

Thank you @deanrie , overall it is solved.

A/ Disabling HTTP/2 didn’t fix the file edit extreme slowness,
B/ Renaming the two storage files did it

Now all work seamlessly
Thank you