# Model provider and tool call is responding very slow

**URL:** <https://forum.cursor.com/t/model-provider-and-tool-call-is-responding-very-slow/172908>\
**Category:** Bug Reports\
**Tags:** performance, networking\
**Created:** [September 24, 2026, 2:52pm UTC](https://forum.cursor.com/t/model-provider-and-tool-call-is-responding-very-slow/172908 "2026-09-24T14:52:39Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![Sam01](https://avatars.discourse-cdn.com/v4/letter/s/a9adbd/32.png) [@Sam01](https://forum.cursor.com/u/Sam01)\
**Post date:** [September 24, 2026, 2:52pm UTC](https://forum.cursor.com/t/model-provider-and-tool-call-is-responding-very-slow/172908/1 "2026-09-24T14:52:39Z")

</div>

### Where does the bug appear (feature/product)?

Cursor IDE

### Describe the Bug

The response via model provider is very slow; I’m using HTTP/2.

### Steps to Reproduce

1. Type something in the chat
2. Wait for streaming response

### Expected Behavior

The agent responds very fast

### Operating System

MacOS

### Version Information

Version: 3.21.18  
VS Code Extension API: 1.128.0  
Commit: c4730f7d93d787d9ab120af715999f0345ee5bc0  
Date: 2026-09-22T02:04:34.641Z  
Layout: Agent Window  
Build Type: Stable  
Release Track: Default  
Electron: 42.10.0  
Chromium: 148.0.7778.280  
Node.js: 24.18.1  
V8: 14.8.178.38-electron.0  
xterm.js: 6.1.0-beta.291  
OS: Darwin arm64 25.6.0

### For AI issues: which model did you use?

Claude Opus 5.5 High

### For AI issues: add Request ID with privacy disabled

```auto
The connection was interrupted repeatedly without saving progress, so the agent stopped to avoid repeating the same work. Retry to continue from the last saved state.
Agent turn stopped after repeated resume attempts made no progress
RetriableError: Agent turn stopped after repeated resume attempts made no progress

```

### Additional Information

I’m getting full green in Network Diagnostic, so Cursor server side isn’t realted to this problem.

### Does this stop you from using Cursor

Yes - Cursor is unusable

---

<div class="post-metadata">

**Author:** ![Sam01](https://avatars.discourse-cdn.com/v4/letter/s/a9adbd/32.png) [@Sam01](https://forum.cursor.com/u/Sam01)\
**Post date:** [September 24, 2026, 2:58pm UTC](https://forum.cursor.com/t/model-provider-and-tool-call-is-responding-very-slow/172908/4 "2026-09-24T14:58:08Z")

</div>

This is horrible

 ![image](https://us1.discourse-cdn.com/cursor1/original/3X/2/0/20ef2904c8f4cc25ff797319589bc5bfa5451c6d.png)

---

<div class="post-metadata">

**Author:** ![Waleed\_Khalid](https://avatars.discourse-cdn.com/v4/letter/w/94ad74/32.png) [@Waleed\_Khalid](https://forum.cursor.com/u/Waleed_Khalid)\
**Post date:** [September 24, 2026, 3:13pm UTC](https://forum.cursor.com/t/model-provider-and-tool-call-is-responding-very-slow/172908/6 "2026-09-24T15:13:03Z")

</div>

Hello Sam,

```auto
   I do have the same issue for windows system as well 

```

---

<div class="post-metadata">

**Author:** ![Colin](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/colin/32/90452_2.png) [@Colin](https://forum.cursor.com/u/Colin)\
**Post date:** [September 25, 2026, 6:05pm UTC](https://forum.cursor.com/t/model-provider-and-tool-call-is-responding-very-slow/172908/7 "2026-09-25T18:05:17Z")

</div>

Hey @Sam01, thanks for the report!

That “Agent stopped retrying” message means the connection between Cursor and our servers dropped twice in a row in the middle of a response, so the agent stopped instead of repeating the same work. Network Diagnostics only runs short checks, so it can pass while long streaming responses keep getting cut off, especially through a VPN or proxy.

Could you try this and tell me what happens:

1. Open Cursor Settings → Browser & Network → HTTP Compatibility Mode (or search the settings for “HTTP Compatibility”) and switch it to HTTP/1.1.
2. Fully quit and reopen Cursor.
3. If you use a VPN or proxy app (for example Clash), turn it off for one test, or switch it to global mode.
4. Open a new chat, select Claude Opus 5.5 High, and send a prompt that makes the agent read a few files.
5. Check whether the response still stalls or ends with “Agent stopped retrying”.

If it still happens, please reply with:

- the request ID for the failed message
- whether you’re on a VPN or proxy, and which one

@Waleed_Khalid Your issue is likely fixed by upgrading to _v3.22_. If this does not fix it, please raise a new thread

---

<div class="post-metadata">

**Author:** ![Waleed\_Khalid](https://avatars.discourse-cdn.com/v4/letter/w/94ad74/32.png) [@Waleed\_Khalid](https://forum.cursor.com/u/Waleed_Khalid)\
**Post date:** [September 25, 2026, 9:36pm UTC](https://forum.cursor.com/t/model-provider-and-tool-call-is-responding-very-slow/172908/9 "2026-09-25T21:36:51Z")

</div>

Hello Colin,  
Thanks a lot for your advice so far. It’s back to normal with 3.22 REV update.

Regards,