I downloaded a chaos invasion mod that alters the
wh_chaos_invasion.lua
to make the chaos appear later or at a different imperial rank.


For testing purposes (to check if it will work for me) I altered the lines to:
-- turn number to force the Chaos Invasion to trigger if the player has not hit the required imperium level. Also works for autoruns where there is no player
ci_mid_game_turn_timeout = 3;
ci_late_game_turn_timeout = 5;

which should make the midgame chaos invasions appear on turn 3 and the lategame chaos invasions appear on turn 5.

Didn't work, at least within a pack file.
After extracting the lua file and putting it directly in the data order it worked halfway, the midgame chaos invasions started at turn 3 with 3 hordes, but after killing them (cheat for testing) on turn 6 only another 3 spawned, even though it should have been 5 because of the lategame turnout starting at turn 5 (and after killing those 3 another 3 appeared...).
After another campaign start without altering the lua-file (only restarting the game) it stopped working and no chaos invasion at all (tested 10 turns).

Why won't it work for me? I have no other mods running and only the base game.

Another question: Is
ci_late_game_turn_timeout = 5;
also the thing which ends up spawning archeron?