diff --git a/src/environment.cpp b/src/environment.cpp
index 53a7fdf..20ecaff 100644
--- a/src/environment.cpp
+++ b/src/environment.cpp
@@ -203,6 +203,19 @@ u32 Environment::getDayNightRatio()
 	return time_to_daynight_ratio(m_time_of_day);
 }
 
+/*
+	ABMWithState
+*/
+
+ABMWithState::ABMWithState(ActiveBlockModifier *abm_):
+	abm(abm_),
+	timer(0)
+{
+	// Initialize timer to random value to spread processing
+	float itv = abm->getTriggerInterval();
+	timer = myrand_range(-0.51*itv, 0.51*itv);
+}
+
 /*
 	ActiveBlockList
 */
diff --git a/src/environment.h b/src/environment.h
index f8df77f..beb4988 100644
--- a/src/environment.h
+++ b/src/environment.h
@@ -129,10 +129,7 @@ struct ABMWithState
 	ActiveBlockModifier *abm;
 	float timer;
 
-	ABMWithState(ActiveBlockModifier *abm_):
-		abm(abm_),
-		timer(0)
-	{}
+	ABMWithState(ActiveBlockModifier *abm_);
 };
 
 /*