added defering of pixel spawning

src/main/java/eu/mhsl/minecraft/pixelblocks/pixelblock/PixelBlock.java

@@ -17,6 +17,8 @@ import org.jetbrains.annotations.NotNull;
 import javax.annotation.Nullable;
 import java.io.File;
 import java.util.*;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
 
 public class PixelBlock {
     private final PixelBlockWorld pixelWorld;
@@ -122,9 +124,14 @@ public class PixelBlock {
     }
 
     public void updateEntities() {
-        this.getBlockTaskChain()
-            .sync(this::clearEntities)
-            .sync(() -> {
+        record PixelData(PixelBlock parent, Vector relativeLocation, BlockData block, double scale) {
+            Pixel create() {
+                return Pixel.newPixel(this.parent, this.relativeLocation, this.block, this.scale);
+            }
+        }
+        List<PixelData> pixelData = new ArrayList<>();
+
+        this.clearEntities();
         for (int x = 0; x < pixelsPerBlock; x++) {
             for (int y = 0; y < pixelsPerBlock; y++) {
                 for (int z = 0; z < pixelsPerBlock; z++) {
@@ -141,15 +148,27 @@ public class PixelBlock {
                     BlockData block = blockLocation.getBlock().getBlockData();
 
                     if(!block.getMaterial().isEmpty()) {
-                                this.getBlockTaskChain()
+                        pixelData.add(new PixelData(this, relativeLocation.toVector(), block, (double) 1 / pixelsPerBlock));
+                    }
+                }
+            }
+        }
+
+        int spawnSpreadInTicks = 10;
+        int chunkSize = (int) Math.ceil((double) pixelData.size() / spawnSpreadInTicks);
+
+        IntStream.range(0, spawnSpreadInTicks)
+            .mapToObj(i -> pixelData.stream()
+                .skip((long) i * chunkSize)
+                .limit(chunkSize)
+                .collect(Collectors.toList()))
+            .forEach(pixels -> this.getBlockTaskChain()
                 .delay(1)
-                                    .sync(() -> pixels.add(Pixel.newPixel(this, relativeLocation.toVector(), block, (double) 1 / pixelsPerBlock)))
-                                    .execute();
-                            }
-                        }
-                    }
-                }
-            })
+                .sync(() -> pixels.forEach(pixel -> this.pixels.add(pixel.create())))
+                .execute());
+
+
+        this.getBlockTaskChain()
             .sync(() -> {
                 if(this.pixels.size() < 5) {
 //                    Location relativeLocation = new Location(pixelBlockLocation.getWorld(), 0, 0, 0);