diff --git a/plugins/scenes/opengl/lanczosfilter.cpp b/plugins/scenes/opengl/lanczosfilter.cpp
index c02158dd6..a9a6855b0 100644
--- a/plugins/scenes/opengl/lanczosfilter.cpp
+++ b/plugins/scenes/opengl/lanczosfilter.cpp
@@ -109,7 +109,7 @@ void LanczosFilter::init()
 
 void LanczosFilter::updateOffscreenSurfaces()
 {
-    const QSize &s = screens()->size();
+    const QSize &s = screens()->size() * 2;
     int w = s.width();
     int h = s.height();
 
@@ -183,13 +183,13 @@ void LanczosFilter::createOffsets(int count, float width, Qt::Orientation direct
 
 void LanczosFilter::performPaint(EffectWindowImpl* w, int mask, QRegion region, WindowPaintData& data)
 {
-    if (data.xScale() < 0.9 || data.yScale() < 0.9) {
+    if (true) {
         if (!m_inited)
             init();
         const QRect screenRect = Workspace::self()->clientArea(ScreenArea, w->screen(), w->desktop());
         // window geometry may not be bigger than screen geometry to fit into the FBO
         QRect winGeo(w->expandedGeometry());
-        if (m_shader && winGeo.width() <= screenRect.width() && winGeo.height() <= screenRect.height()) {
+        if (m_shader && winGeo.width() <= screenRect.width() * 2&& winGeo.height() <= screenRect.height() * 2) {
             winGeo.translate(-w->geometry().topLeft());
             double left = winGeo.left();
             double top = winGeo.top();
@@ -377,6 +377,8 @@ void LanczosFilter::performPaint(EffectWindowImpl* w, int mask, QRegion region,
             cache->unbind();
             w->setData(LanczosCacheRole, QVariant::fromValue(static_cast<void*>(cache)));
 
+            qDebug() << "Real lanczos";
+
             // Delete the offscreen surface after 5 seconds
             m_timer.start(5000, this);
             return;
diff --git a/plugins/scenes/opengl/scene_opengl.cpp b/plugins/scenes/opengl/scene_opengl.cpp
index 1d1747f04..e1e170e25 100644
--- a/plugins/scenes/opengl/scene_opengl.cpp
+++ b/plugins/scenes/opengl/scene_opengl.cpp
@@ -1043,7 +1043,8 @@ void SceneOpenGL2::finalDrawWindow(EffectWindowImpl* w, int mask, QRegion region
 
 void SceneOpenGL2::performPaintWindow(EffectWindowImpl* w, int mask, QRegion region, WindowPaintData& data)
 {
-    if (mask & PAINT_WINDOW_LANCZOS) {
+    bool force = w->caption().contains("10000");
+    if (mask & PAINT_WINDOW_LANCZOS || force) {
         if (!m_lanczosFilter) {
             m_lanczosFilter = new LanczosFilter(this);
             // reset the lanczos filter when the screen gets resized
@@ -1054,6 +1055,7 @@ void SceneOpenGL2::performPaintWindow(EffectWindowImpl* w, int mask, QRegion reg
                 m_lanczosFilter = NULL;
             });
         }
+        qDebug() << "lanczos!";
         m_lanczosFilter->performPaint(w, mask, region, data);
     } else
         w->sceneWindow()->performPaint(mask, region, data);