# Slow Context Summary, up to 10min wait **URL:** \ **Category:** Bug Reports\ **Created:** [December 7, 2025, 1:51am UTC](https://forum.cursor.com/t/slow-context-summary-up-to-10min-wait/145449 "2025-12-07T01:51:43Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![KevinLourd](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/kevinlourd/32/23644_2.png) [@KevinLourd](https://forum.cursor.com/u/KevinLourd)\ **Post date:** [December 7, 2025, 1:51am UTC](https://forum.cursor.com/t/slow-context-summary-up-to-10min-wait/145449/1 "2025-12-07T01:51:43Z")
### Where does the bug appear (feature/product)? Cursor IDE ### Describe the Bug When Claude Sonnet 4.5 needs to create a context summary, it seems to freeze on `Planning next moves` for ages. He only does that when context is full. After 5-10min generally, it says `Contextext summarized` and then continues normally ### Steps to Reproduce Normal usage ### Expected Behavior Fast Should say ‘Summarizing context…’, and be like 10s-long max ### Screenshots / Screen Recordings ![Screenshot 2025-12-07 at 09.44.27.png](https://us1.discourse-cdn.com/cursor1/original/3X/4/a/4accd7b11ed7e2d7a20b79ef3a8ad84956a741da.jpeg) ### Operating System MacOS ### Current Cursor Version (Menu → About Cursor → Copy) Version: 2.1.46 VSCode Version: 1.105.1 Commit: ab326d0767c02fb9847b342c43ea58275c4b1680 Date: 2025-12-02T03:59:29.283Z 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 Sonnet 4.5 ### Does this stop you from using Cursor Sometimes - I can sometimes use Cursor ---
**Author:** ![deanrie](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/deanrie/32/1263_2.png) [@deanrie](https://forum.cursor.com/u/deanrie)\ **Post date:** [December 7, 2025, 7:48am UTC](https://forum.cursor.com/t/slow-context-summary-up-to-10min-wait/145449/2 "2025-12-07T07:48:18Z")
Hey, thanks for the report. There’s a related bug we’re already tracking: - Main thread: [The Cursor IDE freezes at the "planning next moves" stage](https://forum.cursor.com/t/the-cursor-ide-freezes-at-the-planning-next-moves-stage/140553) - Similar cases: [Planning next moves stuck](https://forum.cursor.com/t/planning-next-moves-stuck/143985), [Cursor is unresponsive after sending a prompt to plan](https://forum.cursor.com/t/cursor-is-unresponsive-after-sending-a-prompt-to-plan/145169) To link your case, please share: - 2-3 Request IDs captured during the long wait - A screenshot of Settings - Network - Run Diagnostics - Indexing & Docs status for your project and for a small empty folder - screenshots - Whether this helps: Settings - search “HTTP/2” - enable “Disable HTTP/2” - restart - Behavior on other models (e.g., Composer 1, Haiku 4.5, Opus 4.5) compared to Sonnet 4.5 - Errors from Help - Toggle Developer Tools - Console during the wait Quick checks: - In a new chat, run /summarize until context is summarized: [Summarization | Cursor Docs](https://cursor.com/docs/agent/chat/summarization) - Try the same request in a small repo or an empty folder - compare time to “Context summarized” Once you share the details, I’ll add them to the ticket. ---
**Author:** ![KevinLourd](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/kevinlourd/32/23644_2.png) [@KevinLourd](https://forum.cursor.com/u/KevinLourd)\ **Post date:** [December 9, 2025, 1:07pm UTC](https://forum.cursor.com/t/slow-context-summary-up-to-10min-wait/145449/3 "2025-12-09T13:07:29Z")
- 2-3 Request IDs captured during the long wait a25aa7c7-e6fa-4b9e-a771-05061575c024 920e6559-5466-44b7-a04c-45d911d77■■■ 0181cc74-793f-4e4a-911c-b737e41c1d24 A screenshot of Settings - Network - Run Diagnostics ![Screenshot 2025-12-09 at 20.57.29](https://us1.discourse-cdn.com/cursor1/original/3X/5/b/5b49422c33c8bed81957cba139b85ec05ef8547a.png) Indexing & Docs status for your project and for a small empty folder - screenshots _I dont understand the question_ Whether this helps: Settings - search “HTTP/2” - enable “Disable HTTP/2” - restart → Doesn’t help Behavior on other models (e.g., Composer 1, Haiku 4.5, Opus 4.5) compared to Sonnet 4.5 → Composer 1, Opus 4.5, Gemini 3 Pro : same Errors from Help - Toggle Developer Tools - Console during the wait Errors: 4 ![Screenshot 2025-12-09 at 21.06.14](https://us1.discourse-cdn.com/cursor1/original/3X/9/3/9377d195a89a07c626e73b09b4ba49d10e39666e.png) Infinite warning loop ![Screenshot 2025-12-09 at 21.06.56](https://us1.discourse-cdn.com/cursor1/original/3X/f/a/fac11b01a1d2c92c06f5740482e56baa10b6a44c.png) ---
**Author:** ![deanrie](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/deanrie/32/1263_2.png) [@deanrie](https://forum.cursor.com/u/deanrie)\ **Post date:** [December 9, 2025, 1:14pm UTC](https://forum.cursor.com/t/slow-context-summary-up-to-10min-wait/145449/4 "2025-12-09T13:14:02Z")
Thanks for the data. From the DIAG and console, it’s an HTTP/2 network error - `NGHTTP2_REFUSED_STREAM`. A few steps to narrow it down: 1. In settings.json, force set: `"cursor.general.disableHttp2": true` Fully exit Cursor and restart. Check chat and network diagnostics. 2. Test without VPN/proxy. If using Zscaler/Cloudflare WARP or corporate filter - temporarily disable or add exception and retry. Best - test via mobile hotspot. 3. To check summarization, try /summarize in a new chat and empty folder - compare time to “Context summarized”. Docs: [Summarization | Cursor Docs](https://cursor.com/docs/agent/chat/summarization) Let me know the results. ---
**Author:** ![system](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/system/32/99069_2.png) [@system](https://forum.cursor.com/u/system)\ **Post date:** [December 31, 2025, 1:14pm UTC](https://forum.cursor.com/t/slow-context-summary-up-to-10min-wait/145449/5 "2025-12-31T13:14:58Z")
Closed on December 31, 2025, 1:14pm UTC This topic was automatically closed 22 days after the last reply. New replies are no longer allowed.