Type: Bug
Description
There is a noticeable delay/lag when using the "Run Python File" button in the integrated terminal after the first execution.
Steps to Reproduce
- Click the Play button ("Run Python File") -> Executes normally.
- Modify the code or try to click Play again -> Terminal freezes for several seconds before sending the command.
Key Clues
• Debug Python File works instantly on every single execution. The delay only happens with the normal Play button.
• Disabling Terminal > Integrated > Shell Integration does not fix the issue.
• The issue is not present when running the script manually from an external Windows PowerShell/CMD window.
Suggestions / Expected Behavior
We really appreciate and look forward to the new Shell Integration features (like command decorations, sticky scroll, etc.) brought by recent updates. However, the execution speed shouldn't be compromised.
Please fix this terminal handshake delay/bug so we can enjoy both a fast, instant execution and the new terminal improvements at the same time
Extension version: 2026.6.0
VS Code version: Code 1.139.1 (04c0d99f4fb0d8afe6ce4f0c58e31e183ac3e4b1, 2026-09-25T03:40:57Z)
OS version: Windows_NT x64 10.0.22631
Modes:
System Info
| Item |
Value |
| CPUs |
Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz (8 x 2112) |
| GPU Status |
2d_canvas: enabled
GPU0: VENDOR= 0x8086, DEVICE=0x9b41 [Intel(R) UHD Graphics], DRIVER_VENDOR=Intel, DRIVER_VERSION=26.20.100.6911 ACTIVE
GPU1: VENDOR= 0x10de, DEVICE=0x1d13 [NVIDIA GeForce MX250], DRIVER_VERSION=31.0.15.1640
GPU2: VENDOR= 0x1414, DEVICE=0x008c [Microsoft Basic Render Driver], DRIVER_VERSION=10.0.22621.4249
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) |
7.72GB (2.06GB free) |
| Process Argv |
--crash-reporter-id 18181a09-ffe0-47a3-88ea-329592eb74ad |
| Screen Reader |
no |
| VM |
0% |
A/B Experiments
vsliv368:30146709
vswsl492:30256859
pythonvspyt551cf:31249601
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
6518g693:31463988
aj953862:31281341
envsactivate1:31551504
cloudbuttont:31379625
3efgi100_wstrepl:31403338
ec5jj548:31422691
cp_cls_t_966_ss:31526232
4je02754:31466945
c3h7c220:31478652
cp_cls_t_1081:31454832
conptydll_true:31498968
e9c30283:31461165
c9b86496:31447327
capico_axe_098a3278:31590238
ei9d7968:31496641
chat:31457767
8hig5102:31480529
89g7j272:31518289
i2gc6536:31499202
52612955:31516516
23c7c724:31520045
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
a1ije391_t:31540920
jbcp_cls_pctr_t:31531130
cp_intellij_t_nes:31548657
ahp-both-windows:31556933
hjji5903:31534458
7g2b5551:31542111
nes-ex-cf-euporie-03:31542868
enable_editor_pane_layout:31569726
allow-none:31555437
36h42362:31564511
c7c27ce7:31554789
1h923230:31564177
treatment-23-1:31555779
unuse_dynamic_mcp:31555281
0d8dfbc3:31570291
0c1h4866:31566224
session-mark-done:31591648
5b8j3302:31564601
autotiers:31584978
mangle-name-treatment:31572634
allow-signed-out:31592042
b17abb00-cfec-4134-90da-ee5e32ce4426:31589248
intellij_nes_preview_t:31580086
multiv2:31574985
2bfb8b39:31585911
unread:31581112
links-control:31587703
aw-autom-on:31583758
revealsession_treatment_7ed7e840:31582194
usage_tips_endabled_0911:31587631
4ab0b639:31584543
codex-agent-host-stable-editor:31593046
skill-budget-30000:31593151
0485115c-2712-4002-b6e9-b5d4e30fb963:31586114
sessioninlinediffenabled_disabled:31587634
welcomesignin9359t:31590011
b169b0b1-b17e-475c-9032-91b9b24dde97:31589214
d6a5dc66-a24d-4215-bf31-317b28ac768a:31589212
permission_prompt_control:1332567
ccr_pr_nudge_auto_review:1319472
vsc_wsm_c:1340633
ce50c479:1417073
cfee5631:1379228
3aced641:1389836
jc553158:1433349
cmc_aa_c:1435710
Type: Bug
Description
There is a noticeable delay/lag when using the "Run Python File" button in the integrated terminal after the first execution.
Steps to Reproduce
Key Clues
• Debug Python File works instantly on every single execution. The delay only happens with the normal Play button.
• Disabling Terminal > Integrated > Shell Integration does not fix the issue.
• The issue is not present when running the script manually from an external Windows PowerShell/CMD window.
Suggestions / Expected Behavior
We really appreciate and look forward to the new Shell Integration features (like command decorations, sticky scroll, etc.) brought by recent updates. However, the execution speed shouldn't be compromised.
Please fix this terminal handshake delay/bug so we can enjoy both a fast, instant execution and the new terminal improvements at the same time
Extension version: 2026.6.0
VS Code version: Code 1.139.1 (04c0d99f4fb0d8afe6ce4f0c58e31e183ac3e4b1, 2026-09-25T03:40:57Z)
OS version: Windows_NT x64 10.0.22631
Modes:
System Info
GPU0: VENDOR= 0x8086, DEVICE=0x9b41 [Intel(R) UHD Graphics], DRIVER_VENDOR=Intel, DRIVER_VERSION=26.20.100.6911 ACTIVE
GPU1: VENDOR= 0x10de, DEVICE=0x1d13 [NVIDIA GeForce MX250], DRIVER_VERSION=31.0.15.1640
GPU2: VENDOR= 0x1414, DEVICE=0x008c [Microsoft Basic Render Driver], DRIVER_VERSION=10.0.22621.4249
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
A/B Experiments