diff --git a/src/main/java/gregtech/common/metatileentities/multi/electric/MetaTileEntityPyrolyseOven.java b/src/main/java/gregtech/common/metatileentities/multi/electric/MetaTileEntityPyrolyseOven.java
index 15c3f450c0a..20dbb3d5ca5 100644
--- a/src/main/java/gregtech/common/metatileentities/multi/electric/MetaTileEntityPyrolyseOven.java
+++ b/src/main/java/gregtech/common/metatileentities/multi/electric/MetaTileEntityPyrolyseOven.java
@@ -180,8 +180,12 @@ protected void modifyOverclockPost(int[] resultOverclock, @NotNull IRecipeProper
                 return;
 
             if (coilTier == 0) {
-                resultOverclock[1] *= 5.0 / 4; // 25% slower with cupronickel (coilTier = 0)
-            } else resultOverclock[1] *= 2.0f / (coilTier + 1); // each coil above kanthal (coilTier = 1) is 50% faster
+                // 75% speed with cupronickel (coilTier = 0)
+                resultOverclock[1] = 4 * resultOverclock[1] / 3;
+            } else {
+                // each coil above kanthal (coilTier = 1) is 50% faster
+                resultOverclock[1] = resultOverclock[1] * 2 / (coilTier + 1);
+            }
 
             resultOverclock[1] = Math.max(1, resultOverclock[1]);
         }