diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWF.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWF.java
index e1bff8d17..d53f5d252 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWF.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWF.java
@@ -1259,6 +1259,9 @@ public final class SWF implements SWFContainerItem, Timelined {
             List<ScriptPack> scrs = abc.findScriptPacksByPath(className, allAbcList);
             for (int j = 0; j < scrs.size(); j++) {
                 ScriptPack scr = scrs.get(j);
+                if (!scr.isSimple && Configuration.ignoreCLikePackages.get()) {
+                    continue;
+                }
                 String cnt = "";
                 if (scrs.size() > 1) {
                     cnt = "script " + (j + 1) + "/" + scrs.size() + " ";
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/configuration/Configuration.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/configuration/Configuration.java
index a5374b9f7..261e9a7d6 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/configuration/Configuration.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/configuration/Configuration.java
@@ -479,6 +479,10 @@ public class Configuration {
     @ConfigurationCategory("ui")
     public static final ConfigurationItem<Boolean> allowOnlyOneInstance = null;
 
+    @ConfigurationDefaultBoolean(false)
+    @ConfigurationCategory("script")
+    public static final ConfigurationItem<Boolean> ignoreCLikePackages = null;
+
     private enum OSId {
 
         WINDOWS, OSX, UNIX
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/script/AS3ScriptExporter.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/script/AS3ScriptExporter.java
index 6f8a86c5a..2e714c208 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/script/AS3ScriptExporter.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/exporters/script/AS3ScriptExporter.java
@@ -58,6 +58,9 @@ public class AS3ScriptExporter {
                     @Override
                     public Void call() throws Exception {
                         for (ScriptPack item : packs) {
+                            if (!item.isSimple && Configuration.ignoreCLikePackages.get()) {
+                                continue;
+                            }
                             ExportPackTask task = new ExportPackTask(handler, cnt, packs.size(), item.getClassPath(), item, outdir, exportSettings, parallel, evl);
                             ret.add(task.call());
                         }
@@ -73,6 +76,9 @@ public class AS3ScriptExporter {
             ExecutorService executor = Executors.newFixedThreadPool(Configuration.getParallelThreadCount());
             List<Future<File>> futureResults = new ArrayList<>();
             for (ScriptPack item : packs) {
+                if (!item.isSimple && Configuration.ignoreCLikePackages.get()) {
+                    continue;
+                }
                 Future<File> future = executor.submit(new ExportPackTask(handler, cnt, packs.size(), item.getClassPath(), item, outdir, exportSettings, parallel, evl));
                 futureResults.add(future);
             }
diff --git a/src/com/jpexs/decompiler/flash/gui/MainPanel.java b/src/com/jpexs/decompiler/flash/gui/MainPanel.java
index 6b43093fc..f7e10830a 100644
--- a/src/com/jpexs/decompiler/flash/gui/MainPanel.java
+++ b/src/com/jpexs/decompiler/flash/gui/MainPanel.java
@@ -1235,7 +1235,11 @@ public final class MainPanel extends JPanel implements TreeSelectionListener, Se
                         try (FileTextWriter writer = scriptExportSettings.singleFile ? new FileTextWriter(Configuration.getCodeFormatting(), new FileOutputStream(singleFileName)) : null) {
                             scriptExportSettings.singleFileWriter = writer;
                             for (int i = 0; i < as3scripts.size(); i++) {
+
                                 ScriptPack tls = as3scripts.get(i);
+                                if (!tls.isSimple && Configuration.ignoreCLikePackages.get()) {
+                                    continue;
+                                }
                                 Main.startWork(translate("work.exporting") + " " + (i + 1) + "/" + as3scripts.size() + " " + tls.getPath() + " ...");
                                 ret.add(tls.export(scriptsFolder, scriptExportSettings, parallel));
                             }
diff --git a/src/com/jpexs/decompiler/flash/gui/abc/ABCPanel.java b/src/com/jpexs/decompiler/flash/gui/abc/ABCPanel.java
index bfb44ee22..cf2d478ae 100644
--- a/src/com/jpexs/decompiler/flash/gui/abc/ABCPanel.java
+++ b/src/com/jpexs/decompiler/flash/gui/abc/ABCPanel.java
@@ -175,6 +175,9 @@ public class ABCPanel extends JPanel implements ItemListener, SearchListener<ABC
                 int pos = 0;
                 for (final ScriptPack pack : allpacks) {
                     pos++;
+                    if (!pack.isSimple && Configuration.ignoreCLikePackages.get()) {
+                        continue;
+                    }
                     String workText = AppStrings.translate("work.searching");
                     String decAdd = "";
                     if (!SWF.isCached(pack)) {
@@ -646,6 +649,9 @@ public class ABCPanel extends JPanel implements ItemListener, SearchListener<ABC
             ClassesListTreeModel clModel = (ClassesListTreeModel) scriptsNode;
             ScriptPack pack = null;
             for (ScriptPack item : clModel.getList()) {
+                if (!pack.isSimple && Configuration.ignoreCLikePackages.get()) {
+                    continue;
+                }
                 ClassPath classPath = item.getClassPath();
 
                 // first check the className to avoid calling unnecessary toString
diff --git a/src/com/jpexs/decompiler/flash/gui/abc/ClassesListTreeModel.java b/src/com/jpexs/decompiler/flash/gui/abc/ClassesListTreeModel.java
index b4377bc10..c7d2855a0 100644
--- a/src/com/jpexs/decompiler/flash/gui/abc/ClassesListTreeModel.java
+++ b/src/com/jpexs/decompiler/flash/gui/abc/ClassesListTreeModel.java
@@ -20,6 +20,7 @@ import com.jpexs.decompiler.flash.SWF;
 import com.jpexs.decompiler.flash.abc.ScriptPack;
 import com.jpexs.decompiler.flash.abc.types.traits.Trait;
 import com.jpexs.decompiler.flash.abc.types.traits.TraitClass;
+import com.jpexs.decompiler.flash.configuration.Configuration;
 import com.jpexs.decompiler.flash.gui.AppStrings;
 import com.jpexs.decompiler.flash.timeline.AS3Package;
 import com.jpexs.decompiler.flash.treeitems.AS3ClassTreeItem;
@@ -76,6 +77,9 @@ public class ClassesListTreeModel extends AS3ClassTreeItem implements TreeModel
                     continue;
                 }
             }
+            if (!item.isSimple && Configuration.ignoreCLikePackages.get()) {
+                continue;
+            }
 
             String packageStr = item.getClassPath().packageStr;
             AS3Package pkg = ensurePackage(packageStr);
diff --git a/src/com/jpexs/decompiler/flash/gui/locales/AdvancedSettingsDialog.properties b/src/com/jpexs/decompiler/flash/gui/locales/AdvancedSettingsDialog.properties
index 00edafaaa..7502d8b2a 100644
--- a/src/com/jpexs/decompiler/flash/gui/locales/AdvancedSettingsDialog.properties
+++ b/src/com/jpexs/decompiler/flash/gui/locales/AdvancedSettingsDialog.properties
@@ -365,3 +365,7 @@ config.description.exeExportMode = EXE export mode
 
 config.name.deobfuscationOldMode = Switch deobfuscation to old (5.x) mode
 config.description.deobfuscationOldMode = Disable new deobfuscation and use the old one from previous versions. NOT RECOMMENDED.
+
+config.name.ignoreCLikePackages = Ignore FlashCC / Alchemy or similar packages
+config.description.ignoreCLikePackages = FlashCC/Alchemy packages cannot usually be decompiled correctly. You can disable them to speedup other packages decompilation.
+