orca is sloes down on large files

Issue Type: Bug

on large files eg: 2000+ lines orca will become slow on 200+ line orca will become fast on 501+ line

CC: @isidorn @joanmarie

VS Code version: Code - Insiders 1.64.0-insider (9afbea7caab9dd06592ddd98aa4161b43b126d3f, 2022-01-06T05:15:46.948Z) OS version: Linux x64 5.15.13-zen1-1-zen Restricted Mode: No

System Info

Item	Value
CPUs	Intel® Core™ i7-7700K CPU @ 4.20GHz (8 x 4200)
GPU Status	2d_canvas: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: disabled_off opengl: enabled_on rasterization: disabled_software skia_renderer: enabled_on video_decode: disabled_software vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	1, 1, 1
Memory (System)	15.49GB (0.16GB free)
Process Argv	–crash-reporter-id 49edb027-d44c-4fb4-befd-53de5d4dd885
Screen Reader	yes
VM	0%
DESKTOP_SESSION	gnome
XDG_CURRENT_DESKTOP	GNOME
XDG_SESSION_DESKTOP	gnome
XDG_SESSION_TYPE	x11

Extensions (64)

Extension	Author (truncated)	Version
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vscode-maven	vsc	0.34.2

(1 theme extensions excluded)

A/B Experiments

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[isidorn]

Then let’s reopen. @alex19EP would you be so kind to try to reproduce with latest Chrome and https://vscode.dev/github/microsoft/vscode

If that reproduces, can you also try to reproduce just with a simple text area https://developer.mozilla.org/en-US/docs/Web/HTML/Element/textarea

[isidorn]

My guess is that this is caused by Chrome bug which makes the textArea with a lot of content slow. Unfortunately there is nothing we can do here, however this is fixed in the next Chrome version, which we will get with the Electron update. We plan to start using the new Electron version in the next couple of months and then this should be fixed.

fyi @deepak1556