That’s a very odd preset – I’m trying to work out what it would be used for.
The Hide Last Character animator looks like it is there so you can wipe the letters on by animating the Start property.
I think the Stroke is being applied in the Text preset, rather than use whatever stroke the text is. I haven’t seen the flickering you’ve mentioned though.
Office Lights appears to be working the same for me as in the preview. I noticed in your project file, that it looks like both comps had the Silhouette preset applied as Office lights comes with a couple of sliders.