Copy/paste is verrry slow, backspace and newline (enter key) too

[Pilooz]

Type: Bug

Try to edit a text with backspacing sometime and enter newline with enter key.
It's very slow.
Copy/paste is very slow too even for few chars

Extension version: 0.0.19
VS Code version: Code 1.85.1 (0ee08df0cf4527e40edc9aa28f4b5bd38bbff2b2, 2023-12-13T09:49:37.021Z)
OS version: Windows_NT x64 10.0.19045
Modes:

System Info

Item	Value
CPUs	Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz (8 x 2112)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled
Load (avg)	undefined
Memory (System)	7.76GB (3.34GB free)
Process Argv	--crash-reporter-id a081c408-d0c4-4c33-8cc5-548b6e439ff8
Screen Reader	no
VM	0%

A/B Experiments

vsliv368:30146709
vsreu685:30147344
vspor879:30202332
vspor708:30202333
vspor363:30204092
vslsvsres303:30308271
vshan820:30294714
vscod805cf:30301675
binariesv615:30325510
bridge0708:30335490
bridge0723:30353136
vsaa593:30376534
py29gd2263:30899288
vsclangdf:30486550
c4g48928:30535728
azure-dev_surveyone:30548225
f6dab269:30613381
pythongtdpath:30769146
i26e3531:30792625
welcomedialogc:30910334
pythonidxpt:30866567
pythonnoceb:30805159
asynctok:30898717
pythontestfixt:30902429
pythonregdiag2cf:30928864
pyreplss1:30897532
pythonmypyd1:30879173
pythoncet0:30885854
pythontbext0:30879054
dsvsc016:30899300
dsvsc017:30899301
dsvsc018:30899302
aa_t_chat:30882232
cp7184t3:30927821