You can gain performance by turning off the spawn effects of monsters spawned in groups.
Before:
After:
/**************************************************Game********************************************/
//Game/char.cpp
//X2 Search:
m_afAffectFlag.Set(AFF_SPAWN);
//And Replace:
// m_afAffectFlag.Set(AFF_SPAWN);
/**************************************************Client*******************************************/
//UserInterFace/InstanceBase.cpp
//Search:
if (IsAffect(AFFECT_SPAWN))
__AttachEffect(EFFECT_SPAWN_APPEAR);
//Replace:
/*if (IsAffect(AFFECT_SPAWN))
__AttachEffect(EFFECT_SPAWN_APPEAR);*/
// UserInterFace/InstanceBaseBattle.cpp
//Search:
if (IsAffect(AFFECT_SPAWN))
__AttachEffect(EFFECT_SPAWN_DISAPPEAR);
//Replace:
/*if (IsAffect(AFFECT_SPAWN))
__AttachEffect(EFFECT_SPAWN_DISAPPEAR);*/