diff --git a/zxpoly-emul/src/main/java/com/igormaznitsa/zxpoly/MainForm.java b/zxpoly-emul/src/main/java/com/igormaznitsa/zxpoly/MainForm.java
index 7a8f500b..b12e0028 100644
--- a/zxpoly-emul/src/main/java/com/igormaznitsa/zxpoly/MainForm.java
+++ b/zxpoly-emul/src/main/java/com/igormaznitsa/zxpoly/MainForm.java
@@ -271,7 +271,7 @@ public String getDescription() {
   private final AtomicReference<AnimationEncoder> currentAnimationEncoder = new AtomicReference<>();
   private final Motherboard board;
   private final ZxVideoStreamer videoStreamer;
-  private final Timer wallClock = new Timer(TIMER_INT_DELAY_MILLISECONDS, Duration.ofNanos(50000L));
+  private final Timer wallClock;
   private final Runnable traceWindowsUpdater = new Runnable() {
     @Override
     public void run() {
@@ -386,6 +386,14 @@ public void run() {
 
   public MainForm(final MainFormParameters parameters) {
     super(parameters.getTitle());
+
+    if (AppOptions.getInstance().isTryLessResources()) {
+      LOGGER.info("Less resources mode is active");
+      this.wallClock = new Timer(TIMER_INT_DELAY_MILLISECONDS, Duration.ofNanos(50000L));
+    } else {
+      this.wallClock = new Timer(TIMER_INT_DELAY_MILLISECONDS);
+    }
+
     this.setUndecorated(parameters.isUndecorated());
     Runtime.getRuntime().addShutdownHook(new Thread(this::doOnShutdown));
 
diff --git a/zxpoly-emul/src/main/java/com/igormaznitsa/zxpoly/ui/OptionsPanel.java b/zxpoly-emul/src/main/java/com/igormaznitsa/zxpoly/ui/OptionsPanel.java
index 151c169b..8ca3df23 100644
--- a/zxpoly-emul/src/main/java/com/igormaznitsa/zxpoly/ui/OptionsPanel.java
+++ b/zxpoly-emul/src/main/java/com/igormaznitsa/zxpoly/ui/OptionsPanel.java
@@ -72,9 +72,11 @@ public class OptionsPanel extends JTabbedPane {
   private JLabel labelCustomRomPath;
   private JLabel labelMacroCursorKeys;
   private JLabel labelTimingProfile;
+  private JLabel labelTryLessResources;
   private JLabel labelBorderWidth;
   private JLabel labelEmulateFFport;
   private JCheckBox checkGrabSound;
+  private JCheckBox checkTryLessResources;
   private JCheckBox checkInterlacedScan;
   private JCheckBox checkSoundSchemeACB;
   private JCheckBox checkSyncPaint;
@@ -198,6 +200,7 @@ private void initComponents() {
     labelInterlacedScan = new JLabel();
     labelOldTvFilter = new JLabel();
     labelTimingProfile = new JLabel();
+    labelTryLessResources = new JLabel();
     labelBorderWidth = new JLabel();
     checkInterlacedScan = new JCheckBox();
     labelFfMpegPath = new JLabel();
@@ -235,6 +238,7 @@ private void initComponents() {
     checkAutoiCsForCursorKeys = new JCheckBox();
     checkSyncPaint = new JCheckBox();
     checkOldTvFilter = new JCheckBox();
+    checkTryLessResources = new JCheckBox();
     checkVkbdApart = new JCheckBox();
     comboKeyboardLook = new JComboBox<>(VirtualKeyboardLook.values());
     comboVolumeProfile = new JComboBox<>(VolumeProfile.values());
@@ -623,6 +627,20 @@ private void initComponents() {
     gridBagConstraints.anchor = GridBagConstraints.WEST;
     panelGeneral.add(comboTimingProfile, gridBagConstraints);
 
+    labelTryLessResources.setHorizontalAlignment(RIGHT);
+    labelTryLessResources.setText("Try use less resources:");
+    gridBagConstraints = new GridBagConstraints();
+    gridBagConstraints.gridx = 0;
+    gridBagConstraints.gridy = 12;
+    gridBagConstraints.fill = GridBagConstraints.HORIZONTAL;
+    panelGeneral.add(labelTryLessResources, gridBagConstraints);
+    gridBagConstraints = new GridBagConstraints();
+    gridBagConstraints.gridx = 1;
+    gridBagConstraints.gridy = 12;
+    gridBagConstraints.fill = GridBagConstraints.HORIZONTAL;
+    gridBagConstraints.anchor = GridBagConstraints.WEST;
+    panelGeneral.add(checkTryLessResources, gridBagConstraints);
+
     final JPanel panelKempston = new JPanel(new GridBagLayout());
     panelKempston.setBorder(createTitledBorder("Kempston joystick"));
 
@@ -753,6 +771,7 @@ public static final class DataContainer {
     public final boolean vkdApart;
     public final boolean autoCsForCursorKeys;
     public final boolean interlacedScan;
+    public final boolean tryLessResources;
     public final boolean syncPaint;
     public final boolean oldTvFilter;
     public final boolean emulateFFport;
@@ -779,6 +798,7 @@ public DataContainer() {
       this.timingProfile = AppOptions.getInstance().getTimingProfile();
       this.customRomPath = customRomPath == null ? "" : customRomPath;
       this.interlacedScan = AppOptions.getInstance().isInterlacedScan();
+      this.tryLessResources = AppOptions.getInstance().isTryLessResources();
       this.oldTvFilter = AppOptions.getInstance().isOldColorTvOnStart();
       this.soundSchemeAcb = AppOptions.getInstance().isSoundChannelsACB();
       this.autoCsForCursorKeys = AppOptions.getInstance().getAutoCsForCursorKeys();
@@ -820,6 +840,7 @@ public DataContainer(final OptionsPanel optionsPanel) {
       this.customRomPath = optionsPanel.textCustomRomPath.getText();
 
       this.interlacedScan = optionsPanel.checkInterlacedScan.isSelected();
+      this.tryLessResources = optionsPanel.checkTryLessResources.isSelected();
       this.oldTvFilter = optionsPanel.checkOldTvFilter.isSelected();
 
       this.syncPaint = optionsPanel.checkSyncPaint.isSelected();
@@ -860,6 +881,7 @@ public void store() {
       AppOptions.getInstance().setTimingProfile(this.timingProfile);
       AppOptions.getInstance().setBorderWidth(this.borderWidth);
       AppOptions.getInstance().setInterlacedScan(this.interlacedScan);
+      AppOptions.getInstance().setTryLessResources(this.tryLessResources);
       AppOptions.getInstance().setOldColorTvOnStart(this.oldTvFilter);
       AppOptions.getInstance().setAutoCsForCursorKeys(this.autoCsForCursorKeys);
       AppOptions.getInstance().setCustomRomPath(this.customRomPath);
diff --git a/zxpoly-emul/src/main/java/com/igormaznitsa/zxpoly/utils/AppOptions.java b/zxpoly-emul/src/main/java/com/igormaznitsa/zxpoly/utils/AppOptions.java
index af97f089..18320469 100644
--- a/zxpoly-emul/src/main/java/com/igormaznitsa/zxpoly/utils/AppOptions.java
+++ b/zxpoly-emul/src/main/java/com/igormaznitsa/zxpoly/utils/AppOptions.java
@@ -218,10 +218,18 @@ public synchronized boolean isInterlacedScan() {
     return preferences.getBoolean(Option.INTERLACED_SCAN.name(), true);
   }
 
+  public synchronized boolean isTryLessResources() {
+    return preferences.getBoolean(Option.TRY_LESS_RESOURCES.name(), false);
+  }
+
   public synchronized void setInterlacedScan(final boolean value) {
     preferences.putBoolean(Option.INTERLACED_SCAN.name(), value);
   }
 
+  public synchronized void setTryLessResources(final boolean value) {
+    preferences.putBoolean(Option.TRY_LESS_RESOURCES.name(), value);
+  }
+
   public synchronized int getFrameRate() {
     return preferences.getInt(Option.STREAM_FRAMERATE.name(), 25);
   }
@@ -537,7 +545,8 @@ public enum Option {
     PROTEK_JOYSTICK_VK_DOWN,
     PROTEK_JOYSTICK_VK_FIRE,
     ATTRIBUTE_PORT_FF,
-    ULAPLUS
+    ULAPLUS,
+    TRY_LESS_RESOURCES;
   }
 
 }
diff --git a/zxpoly-emul/src/main/java/com/igormaznitsa/zxpoly/utils/Timer.java b/zxpoly-emul/src/main/java/com/igormaznitsa/zxpoly/utils/Timer.java
index 0e279139..63b23864 100644
--- a/zxpoly-emul/src/main/java/com/igormaznitsa/zxpoly/utils/Timer.java
+++ b/zxpoly-emul/src/main/java/com/igormaznitsa/zxpoly/utils/Timer.java
@@ -26,9 +26,7 @@ public void next(final Duration delay) {
   }
 
   public void sleep() {
-    if (this.sleepDelay < 0L) {
-      Thread.onSpinWait();
-    } else {
+    if (this.sleepDelay > 0L) {
       final long nanos = this.timeout - System.nanoTime();
       if (nanos > this.sleepDelay) {
         LockSupport.parkNanos(this.sleepDelay);