paste is slow with copilot

[pbaksa]

Type: Bug

With a copilot license, pasting text is extremely slow, sometimes I have to wait 5-6 secs before vscode shows the pasted text (~5 normal lines of code).
It shows some spinning icon.
It looks like syntax highlighting (when typing text) is also lower priority than copilot processing.
This happened since the last update got installed.

VS Code version: Code 1.110.0 (0870c2a, 2026-03-04T01:20:28.863Z)
OS version: Windows_NT x64 10.0.22631
Modes:

[wzuqui]

I am experiencing the same slowdown described above.
When pasting code into VS Code, the editor becomes unresponsive for several seconds.
Looking at the output from the GitHub Copilot Chat extension, I see a flood of repeated requests being triggered:

2026-03-10 21:42:42.678 [info] ccreq:f4ec9a52.copilotmd | success | copilot-suggestions-himalia-001 | 6352ms | [nes.nextCursorPosition]
2026-03-10 21:42:42.856 [info] ccreq:beebfc7e.copilotmd | markdown
2026-03-10 21:42:42.872 [info] ccreq:b1db22d0.copilotmd | markdown
2026-03-10 21:42:42.900 [info] ccreq:689ca02b.copilotmd | markdown
2026-03-10 21:42:42.900 [info] ccreq:89233935.copilotmd | markdown
2026-03-10 21:42:42.900 [info] ccreq:38138b94.copilotmd | markdown
2026-03-10 21:42:42.900 [info] ccreq:ae75c4b6.copilotmd | markdown
.............

This sequence of ccreq:... | markdown calls continues for several seconds after each paste, which seems to correlate directly with the slowdown.

Environment:

• VS Code version: 1.111.0
• GitHub Copilot Chat extension version: 0.39.0
• OS: Windows 11 x64 (build 26100.7922)

It looks like Copilot is processing multiple redundant requests on paste, which may explain the performance hit.
Please let me know if additional logs or reproduction steps would be useful.

Version: 1.111.0 (user setup)
Commit: ce099c1
Date: 2026-03-06T23:06:10Z
Electron: 39.6.0
ElectronBuildId: 13330601
Chromium: 142.0.7444.265
Node.js: 22.22.0
V8: 14.2.231.22-electron.0
OS: Windows_NT x64 10.0.26100

[binary-husky]

+1, why this happens? Does someone vibe coding a network job before the paste code ??