Significant performance impact in VSCode

[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:

Disabled language-tools:

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

[johnsoncodehk]

Thanks for the clarification. The problem is that emmet completion should not be affected by TS performance, fixed by microsoft/vscode-html-languageservice#187, 65d38a1.

A fix has been released for v2.1.0-insiders.6, please let me know if it's fixed for you.