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Typescript intellisense is very slow #265300

@Evertvdw

Description

@Evertvdw
Schermopname.2025-09-05.om.10.24.01.mov

Type: Performance Issue

When I edit a .ts file and remove a line that will cause an error (red squiggles) to appear that takes like 4-5 seconds to appear and also when I fix the change it takes the same amount of time of the error to dissapear again.

It is really unworkable, I have no idea why this happens, I tried disabling extensions, installing previous versions of VSCode, nothing works.

VS Code version: Code 1.103.2 (Universal) (6f17636, 2025-08-20T16:45:34.255Z)
OS version: Darwin arm64 24.6.0
Modes:

System Info
Item Value
CPUs Apple M4 Pro (14 x 2400)
GPU Status 2d_canvas: enabled
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: enabled_on
trees_in_viz: disabled_off
video_decode: enabled
video_encode: enabled
webgl: enabled
webgl2: enabled
webgpu: enabled
webnn: disabled_off
Load (avg) 5, 3, 3
Memory (System) 48.00GB (12.35GB free)
Process Argv --crash-reporter-id 8f545743-8f40-4151-98c0-a2ea5fa17359
Screen Reader no
VM 0%
Process Info
CPU %	Mem MB	   PID	Process
    9	151996487424	  8696	code
    0	50665495808	  8700	   gpu-process
    0	25332747904	  8701	   utility-network-service
    0	253327479040	  8703	window [1] (settings.json — Mett4LoginServer)
    0	151996487424	  9009	shared-process
    0	     0	 10307	     /bin/ps -ax -o pid=,ppid=,pcpu=,pmem=,command=
    0	50665495808	  9010	file-watcher [1]
    0	354658470655	  9050	extension-host [1]
    0	75998243712	  9056	     electron-nodejs (tsserver.js )
    0	658651445503	  9057	     electron-nodejs (tsserver.js )
    0	50665495808	  9119	       electron-nodejs (typingsInstaller.js typesMap.js )
    0	151996487424	  9063	     electron-nodejs (server.js )
    0	25332747904	  9812	     electron-nodejs (eslintServer.js )
    0	50665495808	  9820	     /Applications/Visual Studio Code.app/Contents/Frameworks/Code Helper (Plugin).app/Contents/MacOS/Code Helper (Plugin) /Applications/Visual Studio Code.app/Contents/Resources/app/extensions/json-language-features/server/dist/node/jsonServerMain --node-ipc --clientProcessId=9050
    0	50665495808	  9052	pty-host
    0	     0	  9870	     /bin/zsh -il
Workspace Info
|  Window (settings.json — Mett4LoginServer)
|    Folder (Mett4LoginServer): 171 files
|      File types: ts(23) js(20) map(16) yml(14) xml(14) hbs(10) svg(8)
|                  json(7) css(6) html(4)
|      Conf files: package.json(2) settings.json(1) dockerfile(1)
|                  tsconfig.json(1);
Extensions (9)
Extension Author (truncated) Version
vscode-eslint dba 3.0.16
prettier-vscode esb 11.0.0
copilot Git 1.364.0
copilot-chat Git 0.30.3
azure-pipelines ms- 1.249.0
intellicode-api-usage-examples Vis 0.2.9
vscodeintellicode Vis 1.3.2
vscode-icons vsc 12.14.0
volar Vue 3.0.6
A/B Experiments
vsliv368:30146709
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
996jf627:31283433
pythonrdcb7:31342333
usemplatestapi:31297334
747dc170:31275177
aj953862:31281341
nesew2to5:31336538
agentclaude:31350858
nes-set-on:31351930
6abeh943:31336334
0927b901:31350571
aa_t:31379598
45650338:31358607
0cj2b977:31352657
gendocstringt:31379557
pylancealldocsf:31379511
cloudbuttont:31379625
retryenabled:31370050
3efgi100_wstrepl:31374188
trigger-command-fix:31379601

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