VSCode heavy CPU load

Type: Bug

I am experiencing heavy CPU load on multiple coress after cancelling Copilot request while it is thinking. I have to close the window and open it again.
I start to experience delays while typing or navigating VSCode.

VS Code version: Code 1.125.1 (fcf604774b9f2674b473065736ee75077e256353, 2026-06-19T08:39:34Z)
OS version: Windows_NT x64 10.0.26100
Modes:
Remote OS version: Linux x64 6.18.33.1-microsoft-standard-WSL2

System Info

|Item|Value|
|---|---|
|CPUs|Intel(R) Core(TM) Ultra 7 165U (14 x 2688)|
|GPU Status|2d_canvas: enabled
GPU0: VENDOR= 0x8086, DEVICE=0x7d45 [Intel(R) Graphics], DRIVER_VENDOR=Intel, DRIVER_VERSION=32.0.101.8508 *ACTIVE*
GPU1: VENDOR= 0x1414, DEVICE=0x008c [Microsoft Basic Render Driver], DRIVER_VERSION=10.0.26100.8521
Machine model name:
Machine model version:
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: enabled
multiple_raster_threads: enabled_on
opengl: enabled_on
rasterization: enabled
raw_draw: disabled_off_ok
skia_graphite: disabled_off
trees_in_viz: disabled_off
video_decode: enabled
video_encode: enabled
webgl: enabled
webgpu: enabled
webnn: disabled_off|
|Load (avg)|undefined|
|Memory (System)|31.43GB (10.53GB free)|
|Process Argv|--folder-uri=vscode-remote://wsl+Ubuntu-22.04/home/cbortoli/carbit --remote=wsl+Ubuntu-22.04 --crash-reporter-id f886cbcb-8ca2-4db3-a503-2e80aa719c89|
|Screen Reader|no|
|VM|0%|

|Item|Value|
|---|---|
|Remote|WSL: Ubuntu-22.04|
|OS|Linux x64 6.18.33.1-microsoft-standard-WSL2|
|CPUs|Intel(R) Core(TM) Ultra 7 165U (14 x 0)|
|Memory (System)|15.34GB (11.41GB free)|
|VM|0%|
Extensions (18)

Name|Identifier|Author|Version
---|---|---|---
Project Manager|alefragnani.project-manager|alefragnani|13.1.0
Dev Containers|ms-vscode-remote.remote-containers|ms-vscode-remote|0.463.0
WSL|ms-vscode-remote.remote-wsl|ms-vscode-remote|0.104.3
SQLite|alexcvzz.vscode-sqlite|alexcvzz|0.14.1
Foam|foam.foam-vscode|foam|0.44.2
GitHub Actions|github.vscode-github-actions|github|0.32.1
Little Requirements|little-requirements.little-requirements-vscode|little-requirements|0.3.5-dev.9
Rainbow CSV|mechatroner.rainbow-csv|mechatroner|3.24.1
GitHub Copilot for Azure|ms-azuretools.vscode-azure-github-copilot|ms-azuretools|1.0.209
Azure MCP Server|ms-azuretools.vscode-azure-mcp-server|ms-azuretools|2.0.46
Azure Resources|ms-azuretools.vscode-azureresourcegroups|ms-azuretools|0.12.7
Container Tools|ms-azuretools.vscode-containers|ms-azuretools|2.4.5
Python Debugger|ms-python.debugpy|ms-python|2026.6.0
Python|ms-python.python|ms-python|2026.4.0
Pylance|ms-python.vscode-pylance|ms-python|2026.2.1
Python Environments|ms-python.vscode-python-envs|ms-python|1.36.0
Foundry Toolkit for VS Code|ms-windows-ai-studio.windows-ai-studio|ms-windows-ai-studio|1.6.3
Codex – OpenAI’s coding agent|openai.chatgpt|openai|26.707.71524

A/B Experiments

```
vsliv368cf:30146710
vswsl492:30256859
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
6518g693:31463988
aj953862:31281341
6abeh943:31336334
envsdeactivate2:31538737
cloudbuttont:31379625
3efgi100_wstrepl:31403338
ec5jj548:31422691
diffpatch-lysithea-0014-production:31545858
cp_cls_t_966_ss:31526232
4je02754:31466945
c3h7c220:31478652
ge8j1254_inline_auto_hint_haiku:31490510
38bie571_auto:31478677
cp_cls_c_1081:31454833
conptydll_true:31498968
ia-use-proxy-models-svc:31452481
e9c30283:31461165
test_control1:31471004
46204921:31447328
control_6dc23131:31544977
idci7584:31464702
e3e4d672:31494082
ei9d7968:31496641
nes-extended-on:31455476
chat:31457767
8hig5102:31480529
89g7j272:31518289
7e187181:31503455
i2gc6536:31499202
52612955:31516516
ghj88844:31499326
ddid_c:31478207
hmra_i5g22:31518061
7df3h592:31512476
cp_cls_t_1082:31535311
logging_enabled_new:31498466
j0d79568:31499440
jb_cp_cls_t_632:31543129
56dj4588:31512888
32d76977:31512328
ha629193:31508444
cdk-lw-on:31524445
jh5f2457_c:31540921
api_cot_off:31513532
g4a0e106:31529594
8hfba999:31537718
prpt_ctrl:31518467
jbcp_cls_pctr_t:31531130
61138546:31518536
cp_intellij_t_nes:31548657
jf4hg949:31526829
nes-curr-leftover-1500:31538366
h561g132:31533256
sessions_5:31532894
ihg5j128:31534457
9gg7f176:31542112
nes-nc-ctrl:31546581

```