The plugin shifts the spawn time of the infected in versus to a single point, by default to the middle of 10-second intervals.
For example, if player 1 is set to spawn at the 42nd second, and player 2 at the 49th, the plugin will spawn both at 45, in the middle between the 40th and 50th seconds of the game. On average, in versus mode, the spawn time is around 26 sec, and overall, the difference is not noticeable because the adjusted time also falls into this range.
By default, it uses 10-second intervals, with the minimum processed spawn time being 10 seconds, as there is no point in going lower.
This is more useful in 8v8 games, where it definitely affects the gameplay in a positive way, especially if the players are not very experienced. I haven't tried it in 4v4, but it could also be an improvement or it may not, as 4vs4 is already well balanced by volvo
ConVars
l4d_spawn_time_adjuster_threshold - 10.0 - the plugin will not attempt to shift spawn times below this value.
l4d_spawn_time_adjuster_window - 10.0 - spawns will be shifted to the middle of intervals of this length. In terms of gameplay, I didn't notice a difference between 10 and 15.
Linear Mode
