Slow to get a functional TS editor

[kieferrm]

• VSCode Version: Code - Insiders 1.15.0-insider (9b6cc9f, 2017-07-24T05:07:43.734Z)
• OS Version: Darwin x64 16.6.0
• Extensions:

Extension	Author (truncated)	Version
vscode-docker	Pet	0.0.16
quokka-vscode	Wal	1.0.41
crazy	kie	0.0.1
githistory	don	0.2.2
python	don	0.6.9
tslint	eg2	0.17.0
vscode-npm-script	eg2	0.2.0
vsc-travis-ci-status	fel	1.1.0
svgpreview	kis	0.2.0
Go	luk	0.6.62
mssql	ms-	1.1.0
github-issues-prs	ms-	0.3.1
debugger-for-chrome	msj	3.1.6
vscode-versionlens	pfl	0.19.1
Ruby	reb	0.12.1
kustovscode	sea	0.0.1
php-syntax-visualizer	vsc	0.0.1
vscode-open-in-github	ziy	1.2.7

(1 theme extensions excluded)

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Steps to Reproduce:

1. open a VS Code workspace on master, no open editors
2. search for from 'electron' in all *.ts files
3. click on the first search result and wait until TS is properly initialized
4. click on the second search result and select ipcMain in the editor
   -> caret stops blinking, it takes several seconds until the underlying word is highlighted and occurrences are shown in the scrollbar (only happens after the reference code lenses are shown)

Reproduces without extensions: Yes

This is the TS server log

[mjbvz]

Thanks @kieferrm. I've opened microsoft/TypeScript#17385 to track this upstream.

I was able to reproduce this after closing all editor windows which leads me to suspect that the slowdown may be caused by us reloading some or part of the vscode project when switching between the search results

Closing to track upstream