recording a demo does make your game run slightly worse and Im 99% sure I remember mastercoms saying it messes up hitreg a little, probably not the reason people don't record though

If I remember right you have to restart your game or load a new map between changing r_worldlightmin to see the difference. You could also try pasting everything between the quotes in this line from mastercomfig into your config: https://github.com/mastercomfig/mastercomfig/blob/304c3acc58a951f63c4a8b49a4ba2e065c959582/config/mastercomfig/cfg/comfig/comfig.cfg#L294.

I think probably the setting that would affect that would be r_worldlightmin, mastercomfig uses 999999 for very low and .0008 for low so you could try one of those

there's LTSC 21h2 now, I think it has that

i bought their domain

I've found that windows 10 enterprise ltsc is a lot more bearable compared to the regular windows 10, though the powershell scripts or w10privacy or whatever are still needed to disable some of the nut shit you don't want

you can change the rocket trail particle effect (particles/rockettrail.pcf) or just the texture (materials/effects/rocketrailsmoke.vmt) to be whatever you like, but it will be blocked by the sv_pure settings of most servers

you probably overrode it with something. each weapon script can only have one file, they don't stack.

hover over it with your mouse

https://i.imgur.com/m09xi4u.png

It's absolutely an interesting question to think about. At first, one would naturally think that no, of course the scout would not be able to run as fast as normal if he were to be wearing heavy and robust metal shoes on his feet. I couldn't blame anyone for drawing this conclusion initially. I don't think anyone could. When given some further consideration, though, it becomes readily apparent that the soldier's gait is obviously not slowed down in any fashion by the gunboats, so in the same vein, the scout's shouldn't be slower either. There might be something to be said in regards to the soldier's leg strength compared with that of the scout, along the lines that the scout would be impacted in ways that the soldier doesn't suffer from. At this point, it wouldn't be out of the question to bring Newton's 2nd law of motion into the discussion. It's not something I can confidently answer one way or the other.

https://i.imgur.com/yNQ9jgt.jpg

https://i.imgur.com/bEobfa5.jpg

you might consider undoing this

SteamDB has an index of manifest IDs for tf2 dating as far back as a version from April 17th, 2013 that you should be able to download from steam still. I haven't tried it myself and I'm not sure if it would work for the old old demos, but it's perhaps worth a shot.