diff --git a/OpenRA.Game/Exts.cs b/OpenRA.Game/Exts.cs
index 1f3dc5261a..d51b9f0caa 100644
--- a/OpenRA.Game/Exts.cs
+++ b/OpenRA.Game/Exts.cs
@@ -503,6 +503,26 @@ namespace OpenRA
 		{
 			return IsTraitEnabled(t as object);
 		}
+
+		public static T FirstEnabledTraitOrDefault<T>(this IEnumerable<T> ts)
+		{
+			// PERF: Avoid LINQ.
+			foreach (var t in ts)
+				if (t.IsTraitEnabled())
+					return t;
+
+			return default(T);
+		}
+
+		public static T FirstEnabledTraitOrDefault<T>(this T[] ts)
+		{
+			// PERF: Avoid LINQ.
+			foreach (var t in ts)
+				if (t.IsTraitEnabled())
+					return t;
+
+			return default(T);
+		}
 	}
 
 	public static class Enum<T>
diff --git a/OpenRA.Game/Traits/Player/FrozenActorLayer.cs b/OpenRA.Game/Traits/Player/FrozenActorLayer.cs
index 51462a940a..0c36c29003 100644
--- a/OpenRA.Game/Traits/Player/FrozenActorLayer.cs
+++ b/OpenRA.Game/Traits/Player/FrozenActorLayer.cs
@@ -103,7 +103,7 @@ namespace OpenRA.Traits
 				DamageState = health.DamageState;
 			}
 
-			var tooltip = tooltips.FirstOrDefault(Exts.IsTraitEnabled);
+			var tooltip = tooltips.FirstEnabledTraitOrDefault();
 			if (tooltip != null)
 			{
 				TooltipInfo = tooltip.TooltipInfo;
diff --git a/OpenRA.Mods.Common/Lint/CheckTooltips.cs b/OpenRA.Mods.Common/Lint/CheckTooltips.cs
index c2576ce150..70d3cc4d17 100644
--- a/OpenRA.Mods.Common/Lint/CheckTooltips.cs
+++ b/OpenRA.Mods.Common/Lint/CheckTooltips.cs
@@ -26,7 +26,7 @@ namespace OpenRA.Mods.Common.Lint
 				if (buildable == null)
 					continue;
 
-				var tooltip = actorInfo.Value.TraitInfos<TooltipInfo>().FirstOrDefault(Exts.IsTraitEnabled);
+				var tooltip = actorInfo.Value.TraitInfos<TooltipInfo>().FirstEnabledTraitOrDefault();
 				if (tooltip == null)
 					emitError("The following buildable actor has no (enabled) Tooltip: " + actorInfo.Key);
 			}
diff --git a/OpenRA.Mods.Common/Traits/Render/WithMakeAnimation.cs b/OpenRA.Mods.Common/Traits/Render/WithMakeAnimation.cs
index 21ea11c379..9ce59d9718 100644
--- a/OpenRA.Mods.Common/Traits/Render/WithMakeAnimation.cs
+++ b/OpenRA.Mods.Common/Traits/Render/WithMakeAnimation.cs
@@ -60,7 +60,7 @@ namespace OpenRA.Mods.Common.Traits.Render
 			if (conditionManager != null && !string.IsNullOrEmpty(info.Condition) && token == ConditionManager.InvalidConditionToken)
 				token = conditionManager.GrantCondition(self, info.Condition);
 
-			var wsb = wsbs.FirstOrDefault(Exts.IsTraitEnabled);
+			var wsb = wsbs.FirstEnabledTraitOrDefault();
 
 			if (wsb == null)
 				return;
@@ -80,7 +80,7 @@ namespace OpenRA.Mods.Common.Traits.Render
 			if (conditionManager != null && !string.IsNullOrEmpty(info.Condition) && token == ConditionManager.InvalidConditionToken)
 				token = conditionManager.GrantCondition(self, info.Condition);
 
-			var wsb = wsbs.FirstOrDefault(Exts.IsTraitEnabled);
+			var wsb = wsbs.FirstEnabledTraitOrDefault();
 
 			if (wsb == null)
 				return;
@@ -99,7 +99,7 @@ namespace OpenRA.Mods.Common.Traits.Render
 		{
 			Reverse(self, () =>
 			{
-				var wsb = wsbs.FirstOrDefault(Exts.IsTraitEnabled);
+				var wsb = wsbs.FirstEnabledTraitOrDefault();
 
 				// HACK: The actor remains alive and active for one tick before the followup activity
 				// (sell/transform/etc) runs. This causes visual glitches that we attempt to minimize
diff --git a/OpenRA.Mods.Common/Traits/Render/WithWallSpriteBody.cs b/OpenRA.Mods.Common/Traits/Render/WithWallSpriteBody.cs
index 6410d18989..f4e347792f 100644
--- a/OpenRA.Mods.Common/Traits/Render/WithWallSpriteBody.cs
+++ b/OpenRA.Mods.Common/Traits/Render/WithWallSpriteBody.cs
@@ -47,7 +47,7 @@ namespace OpenRA.Mods.Common.Traits.Render
 					var haveNeighbour = false;
 					foreach (var n in kv.Value)
 					{
-						var rb = init.World.Map.Rules.Actors[n].TraitInfos<IWallConnectorInfo>().FirstOrDefault(Exts.IsTraitEnabled);
+						var rb = init.World.Map.Rules.Actors[n].TraitInfos<IWallConnectorInfo>().FirstEnabledTraitOrDefault();
 						if (rb != null && rb.GetWallConnectionType() == Type)
 						{
 							haveNeighbour = true;
@@ -119,7 +119,7 @@ namespace OpenRA.Mods.Common.Traits.Render
 			foreach (var a in adjacentActors)
 			{
 				CVec facing;
-				var wc = a.TraitsImplementing<IWallConnector>().FirstOrDefault(Exts.IsTraitEnabled);
+				var wc = a.TraitsImplementing<IWallConnector>().FirstEnabledTraitOrDefault();
 				if (wc == null || !wc.AdjacentWallCanConnect(a, self.Location, wallInfo.Type, out facing))
 					continue;
 
diff --git a/OpenRA.Mods.Common/Traits/World/EditorActorPreview.cs b/OpenRA.Mods.Common/Traits/World/EditorActorPreview.cs
index acd876a3e2..8b0137a712 100644
--- a/OpenRA.Mods.Common/Traits/World/EditorActorPreview.cs
+++ b/OpenRA.Mods.Common/Traits/World/EditorActorPreview.cs
@@ -70,8 +70,8 @@ namespace OpenRA.Mods.Common.Traits
 				Footprint = new ReadOnlyDictionary<CPos, SubCell>(footprint);
 			}
 
-			var tooltip = Info.TraitInfos<EditorOnlyTooltipInfo>().FirstOrDefault(Exts.IsTraitEnabled) as TooltipInfoBase
-				?? Info.TraitInfos<TooltipInfo>().FirstOrDefault(Exts.IsTraitEnabled);
+			var tooltip = Info.TraitInfos<EditorOnlyTooltipInfo>().FirstEnabledTraitOrDefault() as TooltipInfoBase
+				?? Info.TraitInfos<TooltipInfo>().FirstEnabledTraitOrDefault();
 
 			Tooltip = (tooltip == null ? " < " + Info.Name + " >" : tooltip.Name) + "\n" + owner.Name + " (" + owner.Faction + ")"
 				+ "\nID: " + ID + "\nType: " + Info.Name;
diff --git a/OpenRA.Mods.Common/Widgets/Logic/Ingame/ProductionTooltipLogic.cs b/OpenRA.Mods.Common/Widgets/Logic/Ingame/ProductionTooltipLogic.cs
index ab53bf5b3b..e55708847a 100644
--- a/OpenRA.Mods.Common/Widgets/Logic/Ingame/ProductionTooltipLogic.cs
+++ b/OpenRA.Mods.Common/Widgets/Logic/Ingame/ProductionTooltipLogic.cs
@@ -67,7 +67,7 @@ namespace OpenRA.Mods.Common.Widgets.Logic
 				if (actor == lastActor && hotkey == lastHotkey && pm.PowerState == lastPowerState)
 					return;
 
-				var tooltip = actor.TraitInfos<TooltipInfo>().FirstOrDefault(Exts.IsTraitEnabled);
+				var tooltip = actor.TraitInfos<TooltipInfo>().FirstEnabledTraitOrDefault();
 				var name = tooltip != null ? tooltip.Name : actor.Name;
 				var buildable = actor.TraitInfo<BuildableInfo>();
 				var cost = actor.TraitInfo<ValuedInfo>().Cost;
@@ -135,7 +135,7 @@ namespace OpenRA.Mods.Common.Widgets.Logic
 			ActorInfo ai;
 			if (rules.Actors.TryGetValue(a.ToLowerInvariant(), out ai))
 			{
-				var actorTooltip = ai.TraitInfos<TooltipInfo>().FirstOrDefault(Exts.IsTraitEnabled);
+				var actorTooltip = ai.TraitInfos<TooltipInfo>().FirstEnabledTraitOrDefault();
 				if (actorTooltip != null)
 					return actorTooltip.Name;
 			}
diff --git a/OpenRA.Mods.Common/Widgets/ViewportControllerWidget.cs b/OpenRA.Mods.Common/Widgets/ViewportControllerWidget.cs
index c0f1218cfd..21ae51742c 100644
--- a/OpenRA.Mods.Common/Widgets/ViewportControllerWidget.cs
+++ b/OpenRA.Mods.Common/Widgets/ViewportControllerWidget.cs
@@ -235,7 +235,7 @@ namespace OpenRA.Mods.Common.Widgets
 
 			if (underCursor != null)
 			{
-				ActorTooltip = underCursor.TraitsImplementing<ITooltip>().FirstOrDefault(Exts.IsTraitEnabled);
+				ActorTooltip = underCursor.TraitsImplementing<ITooltip>().FirstEnabledTraitOrDefault();
 				if (ActorTooltip != null)
 				{
 					ActorTooltipExtra = underCursor.TraitsImplementing<IProvideTooltipInfo>().ToArray();