the timing for this is incredibly awkward/unlucky! config editing for lower spec PCs is nothing unique to GMod. at a certain point, the lower level arguments being added do look a little sketchy, and in multiplayer games the line is blurred since other players are not going to go through the same hoops for the benefits.
that being said, the arguments provided in allow's post are available to all users who own a copy of GMod, no external software is being used to gain an advantage over other users.
I've had to edit configs for other games in the past due to having nearly unplayable framerates, and I could certainly see this method being of use when a player wants to farm AB passively while doing other things on their PC.
again, the timing of this post is spectacularly unlucky given the recent server changes, but on any day prior I think this would be a well received method to save resources on lower spec PCs, while still staying on the server (which incentives AFKing)
clearly allow does not intend for this post to provide any unfair advantage by providing it in open detail to the community, and consulting the owner directly with the method.
i love firearms!!! sadly because the laws in the UK are much stricter, i can only show my love through airsoft :(( i'll try and get some pictures next time i play of my gear!!