diff --git a/core/src/mindustry/io/TypeIO.java b/core/src/mindustry/io/TypeIO.java
index 43cd8ef89b..226fc67ea6 100644
--- a/core/src/mindustry/io/TypeIO.java
+++ b/core/src/mindustry/io/TypeIO.java
@@ -162,6 +162,11 @@ public class TypeIO{
                 read.b(bytes);
                 yield bytes;
             }
+            //unit command
+            case 15 -> {
+                read.b();
+                yield null;
+            }
             case 16 -> {
                 int boollen = read.i();
                 boolean[] bools = new boolean[boollen];
@@ -467,6 +472,9 @@ public class TypeIO{
             //make sure player exists
             if(player == null) return prev;
             return player;
+        }else if(type == 1){ //formation controller (ignored)
+            read.i();
+            return prev;
         }else if(type == 3){
             int pos = read.i();
             if(prev instanceof LogicAI pai){
diff --git a/core/src/mindustry/io/versions/LegacySaveVersion2.java b/core/src/mindustry/io/versions/LegacySaveVersion2.java
index 02a986cb85..ea51e475b8 100644
--- a/core/src/mindustry/io/versions/LegacySaveVersion2.java
+++ b/core/src/mindustry/io/versions/LegacySaveVersion2.java
@@ -1,6 +1,7 @@
 package mindustry.io.versions;
 
 import arc.func.*;
+import arc.util.*;
 import arc.util.io.*;
 import mindustry.gen.*;
 
diff --git a/core/src/mindustry/world/blocks/power/NuclearReactor.java b/core/src/mindustry/world/blocks/power/NuclearReactor.java
index 12fec02fa1..01a0de88b6 100644
--- a/core/src/mindustry/world/blocks/power/NuclearReactor.java
+++ b/core/src/mindustry/world/blocks/power/NuclearReactor.java
@@ -42,6 +42,7 @@ public class NuclearReactor extends PowerGenerator{
     public int explosionDamage = 1250;
     /** heat removed per unit of coolant */
     public float coolantPower = 0.5f;
+    public float smoothLight;
 
     public Item fuelItem = Items.thorium;
 
@@ -143,7 +144,8 @@ public class NuclearReactor extends PowerGenerator{
         @Override
         public void drawLight(){
             float fract = productionEfficiency;
-            Drawf.light(x, y, (90f + Mathf.absin(5, 5f)) * fract, Tmp.c1.set(lightColor).lerp(Color.scarlet, heat), 0.6f * fract);
+            smoothLight = Mathf.lerpDelta(smoothLight, fract, 0.08f);
+            Drawf.light(x, y, (90f + Mathf.absin(5, 5f)) * smoothLight, Tmp.c1.set(lightColor).lerp(Color.scarlet, heat), 0.6f * smoothLight);
         }
 
         @Override