Unreal Engine 2/3/4 shader compilation on load (not on demand)

UE2_3_4_shader_compilation_on_load

#the following settings will alleviate or outright prevent shader stutter
#with the downside of taking up more GPU memory, hence it may not benefit
#GPUs with insufficient VRAM

#for UE2 engine titles edit the main config ini file 
#(e.g. Unreal2.ini) to add/change the below lines:
[D3DDrv.D3DRenderDevice]
UsePrecaching=True
AvoidHitches=True

#for UE3 engine titles add/change the following line in
#..\Documents\..\Config\<GameName>Engine.ini

[Engine.ISVHacks]
bInitializeShadersOnDemand=False

#for UE4 engine titles add the following in
#...\AppData\Local\<GameName>\Saved\Config\WindowsNoEditor\Engine.ini

[/script/engine.renderersettings]
r.CreateShadersOnLoad=1
niagara.CreateShadersOnLoad=1