Stop updating your addons where you don't add anything.

Stop updating your addons where you don't add anything. You are engaged in sabotage that drowns new additions. I would die of shame with such updates.

What exactly does this config provide? I don't see any difference.

What exactly does this config provide?  I don't see any difference.  And why are you playing at 200 fps?  Your video card is noisy and will fail faster.  Normal gamers set the limit to 90-120 fps.  This is more than enough for online games.  Especially such an old game.

This is a mod from Left4Dead2 and it fits Left4Dead.

This is a mod from Left4Dead2 and it fits Left4Dead.
https://steamcommunity.com/sharedfiles/filedetails/?id=2351418367&searchtext=smoker+priest