Are you experiencing or during turn transitions ? Are you using the Steam Launcher or Kaedrin's Mod Manager ?
These mods patch engine bugs or provide core scripting libraries that other complex mods rely on to function. They must load last so nothing accidentally alters their code.
Mods that add new units to existing rosters or tweak battle attributes (like weapon damage or movement speed) belong near the bottom to ensure their unique stats are not overwritten by larger overhauls.
Examples: Better AI Recruitment, Aggressive AI, adjusted sandbox settings. 5. New Units and Factions
Load order determines which mod "wins" when two files attempt to modify the same game data.