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Significant performance impact in VSCode #4298

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microsoft/vscode-html-languageservice
#187
@itpropro

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@itpropro

If this issue is already be worked on and tracked in #3531 or #3801 feel free to close this.
I experience a huge downgrade in VSCode performance caused by the vue language-tools. This applies to the insider version 2.0.14 as well as to the 2.0.11.
For this test I disabled every other extension in VSCode and even started with a completely new isolated instance of VSCode, but as soon as the language-tools are enabled, the performance impact is clearly visible.

Enabled language-tools:

Enabled

Disabled language-tools:

Disabled

This can be reproduced with every vue project, by opening it in VSCode and disabling every extension except the vue language-tools. The impact in probably different by the size of the project, but always significant.

OS: Windows 11 23H2 (22631.3447)
VSCode: 1.88.1

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