diff --git a/src/App/LedFixture.cpp b/src/App/LedFixture.cpp
index e3233e3e..fd6643ec 100644
--- a/src/App/LedFixture.cpp
+++ b/src/App/LedFixture.cpp
@@ -110,7 +110,7 @@ void Fixture::projectAndMap() {
               mdl->getValueRowNr = rowNr; //run projection functions in the right rowNr context
 
               //using cached virtual class methods!
-              if (projection) (projection->*leds->adjustSizeAndPixelCached)(sizeAdjusted, pixelAdjusted, midPosAdjusted);
+              if (projection) (projection->*leds->adjustSizeAndPixelCached)(*leds, sizeAdjusted, pixelAdjusted, midPosAdjusted);
 
               if (leds->size == Coord3D{0,0,0}) { // first
                 ppf("projectAndMap first leds[%d] size:%d,%d,%d s:%d,%d,%d e:%d,%d,%d\n", rowNr, sizeAdjusted.x, sizeAdjusted.y, sizeAdjusted.z, startPosAdjusted.x, startPosAdjusted.y, startPosAdjusted.z, endPosAdjusted.x, endPosAdjusted.y, endPosAdjusted.z);
@@ -134,7 +134,7 @@ void Fixture::projectAndMap() {
                   mapped = pixelAdjusted;
 
                   //using cached virtual class methods!
-                  if (projection) (projection->*leds->adjustMappedCached)(mapped, sizeAdjusted, (pixel - startPosAdjusted)/10, midPosAdjusted);
+                  if (projection) (projection->*leds->adjustMappedCached)(*leds, mapped, sizeAdjusted, (pixel - startPosAdjusted)/10, midPosAdjusted);
 
                   if (leds->projectionNr != p_Pinwheel) { //Pinwheel temp fix
                     mapped.x = mapped.distance(midPosAdjusted);
@@ -195,7 +195,7 @@ void Fixture::projectAndMap() {
                   }
 
                   //using cached virtual class methods!
-                  if (projection) (projection->*leds->adjustMappedCached)(mapped, sizeAdjusted, (pixel - startPosAdjusted)/10, midPosAdjusted);
+                  if (projection) (projection->*leds->adjustMappedCached)(*leds, mapped, sizeAdjusted, (pixel - startPosAdjusted)/10, midPosAdjusted);
 
                   indexV = leds->XYZUnprojected(mapped);
                   break;
@@ -227,7 +227,7 @@ void Fixture::projectAndMap() {
                   }
 
                   //using cached virtual class methods!
-                  if (projection) (projection->*leds->adjustMappedCached)(mapped, sizeAdjusted, (pixel - startPosAdjusted)/10, midPosAdjusted);
+                  if (projection) (projection->*leds->adjustMappedCached)(*leds, mapped, sizeAdjusted, (pixel - startPosAdjusted)/10, midPosAdjusted);
 
                   indexV = leds->XYZUnprojected(mapped);
                   
diff --git a/src/App/LedFixture.h b/src/App/LedFixture.h
index e9ad943e..16a9f6b2 100644
--- a/src/App/LedFixture.h
+++ b/src/App/LedFixture.h
@@ -30,9 +30,9 @@ class Projection {
   virtual const char * tags() {return "";}
   // virtual uint8_t dim() {return _1D;};
 
-  virtual void adjustSizeAndPixel(Coord3D &sizeAdjusted, Coord3D &pixelAdjusted, Coord3D &midPosAdjusted) {}
+  virtual void adjustSizeAndPixel(Leds &leds, Coord3D &sizeAdjusted, Coord3D &pixelAdjusted, Coord3D &midPosAdjusted) {}
 
-  virtual void adjustMapped(Coord3D &mapped, Coord3D sizeAdjusted, Coord3D pixelAdjusted, Coord3D midPosAdjusted) {}
+  virtual void adjustMapped(Leds &leds, Coord3D &mapped, Coord3D sizeAdjusted, Coord3D pixelAdjusted, Coord3D midPosAdjusted) {}
 
   virtual void adjustXYZ(Leds &leds, Coord3D &pixel) {}
   
diff --git a/src/App/LedLeds.h b/src/App/LedLeds.h
index 2c870939..70b8f604 100644
--- a/src/App/LedLeds.h
+++ b/src/App/LedLeds.h
@@ -145,7 +145,7 @@ class SharedData {
   }
 
   //sets the sharedData pointer back to 0 so loop effect can go through it
-  void loop() {
+  void begin() {
     index = 0;
   }
 
@@ -272,8 +272,8 @@ class Leds {
   unsigned8 projectionNr = -1;
 
   //using cached virtual class methods! 4 bytes each - thats for now the price we pay for speed
-  void (Projection::*adjustSizeAndPixelCached)(Coord3D &, Coord3D &, Coord3D &) = nullptr;
-  void (Projection::*adjustMappedCached)(Coord3D &, Coord3D, Coord3D, Coord3D) = nullptr;
+  void (Projection::*adjustSizeAndPixelCached)(Leds &, Coord3D &, Coord3D &, Coord3D &) = nullptr;
+  void (Projection::*adjustMappedCached)(Leds &, Coord3D &, Coord3D, Coord3D, Coord3D) = nullptr;
   void (Projection::*adjustXYZCached)(Leds &, Coord3D &) = nullptr;
 
   unsigned8 effectDimension = -1;
@@ -289,6 +289,7 @@ class Leds {
   unsigned8 proRollSpeed = 128;
 
   SharedData sharedData;
+  SharedData sharedProData;
 
   std::vector<PhysMap> mappingTable;
 
diff --git a/src/App/LedModEffects.h b/src/App/LedModEffects.h
index 8b30ad7d..f2e72b84 100644
--- a/src/App/LedModEffects.h
+++ b/src/App/LedModEffects.h
@@ -186,12 +186,12 @@ class LedModEffects:public SysModule {
 
           if (leds->fx < effects.size()) {
 
-            leds->sharedData.reset(); //make sure all values are 0 and reset for a fresh start of the effect
 
             Effect* effect = effects[leds->fx];
 
             // effect->loop(leds); //do a loop to set sharedData right
-            // leds->sharedData.loop();
+            leds->sharedData.reset(); //make sure all values are 0 and reset for a fresh start of the effect
+            // leds->sharedData.begin();
             mdl->varPreDetails(var, rowNr);
             effect->controls(*leds, var);
             mdl->varPostDetails(var, rowNr);
@@ -422,7 +422,7 @@ class LedModEffects:public SysModule {
           // ppf(" %d %d,%d,%d - %d,%d,%d (%d,%d,%d)", leds->fx, leds->startPos.x, leds->startPos.y, leds->startPos.z, leds->endPos.x, leds->endPos.y, leds->endPos.z, leds->size.x, leds->size.y, leds->size.z );
           mdl->getValueRowNr = rowNr++;
 
-          leds->sharedData.loop(); //sets the sharedData pointer back to 0 so loop effect can go through it
+          leds->sharedData.begin(); //sets the sharedData pointer back to 0 so loop effect can go through it
           effects[leds->fx]->loop(*leds);
 
           mdl->getValueRowNr = UINT8_MAX;
diff --git a/src/App/LedProjections.h b/src/App/LedProjections.h
index 1e586dac..2aaece14 100644
--- a/src/App/LedProjections.h
+++ b/src/App/LedProjections.h
@@ -35,8 +35,9 @@ class MultiplyProjection: public Projection {
 
   public: //to use in Preset1Projection
 
-  void adjustSizeAndPixel(Coord3D &sizeAdjusted, Coord3D &pixelAdjusted, Coord3D &midPosAdjusted) {
-    Coord3D proMulti = mdl->getValue("proMulti"); //, rowNr
+  void adjustSizeAndPixel(Leds &leds, Coord3D &sizeAdjusted, Coord3D &pixelAdjusted, Coord3D &midPosAdjusted) {
+    leds.sharedProData.begin();
+    Coord3D proMulti       = leds.sharedProData.read<Coord3D>();
     //promulti can be 0,0,0 but /= protects from /div0
     sizeAdjusted /= proMulti; sizeAdjusted = sizeAdjusted.maximum(Coord3D{1,1,1}); //size min 1,1,1
     midPosAdjusted /= proMulti;
@@ -44,9 +45,11 @@ class MultiplyProjection: public Projection {
     // ppf("Multiply %d,%d,%d\n", leds->size.x, leds->size.y, leds->size.z);
   }
 
-  void adjustMapped(Coord3D &mapped, Coord3D sizeAdjusted, Coord3D pixelAdjusted, Coord3D midPosAdjusted) {
+  void adjustMapped(Leds &leds, Coord3D &mapped, Coord3D sizeAdjusted, Coord3D pixelAdjusted, Coord3D midPosAdjusted) {
     // if mirrored find the indexV of the mirrored pixel
-    bool mirror = mdl->getValue("mirror");
+    leds.sharedProData.begin();
+    Coord3D proMulti       = leds.sharedProData.read<Coord3D>();
+    bool mirror            = leds.sharedProData.read<bool>();
 
     if (mirror) {
       Coord3D mirrors = pixelAdjusted / sizeAdjusted; //place the pixel in the right quadrant
@@ -57,12 +60,15 @@ class MultiplyProjection: public Projection {
   }
 
   void controls(Leds &leds, JsonObject parentVar) {
-    ui->initCoord3D(parentVar, "proMulti", {2,2,1}, 0, 10, false, [&leds](JsonObject var, unsigned8 rowNr, unsigned8 funType) { switch (funType) { //varFun
+    leds.sharedProData.reset();
+    Coord3D *proMulti = leds.sharedProData.write<Coord3D>({2,2,1});
+    bool *mirror = leds.sharedProData.write<bool>(false);
+    ui->initCoord3D(parentVar, "proMulti", proMulti, 0, 10, false, [&leds, mirror](JsonObject var, unsigned8 rowNr, unsigned8 funType) { switch (funType) { //varFun
       case onUI:
         ui->setLabel(var, "MultiplyX");
         return true;
       case onChange:
-        ui->initCheckBox(var, "mirror", false, false, [&leds](JsonObject var, unsigned8 rowNr, unsigned8 funType) { switch (funType) { //varFun
+        ui->initCheckBox(var, "mirror", mirror, false, [&leds](JsonObject var, unsigned8 rowNr, unsigned8 funType) { switch (funType) { //varFun
           case onChange:
             if (rowNr < leds.fixture->listOfLeds.size()) {
               leds.fixture->listOfLeds[rowNr]->triggerMapping();
@@ -171,14 +177,14 @@ class Preset1Projection: public Projection {
   //uint8_t dim() {return _1D;} // every projection should work for all D
   const char * tags() {return "💫";}
 
-  void adjustSizeAndPixel(Coord3D &sizeAdjusted, Coord3D &pixelAdjusted, Coord3D &midPosAdjusted) {
+  void adjustSizeAndPixel(Leds &leds, Coord3D &sizeAdjusted, Coord3D &pixelAdjusted, Coord3D &midPosAdjusted) {
     MultiplyProjection mp;
-    mp.adjustSizeAndPixel(sizeAdjusted, pixelAdjusted, midPosAdjusted);
+    mp.adjustSizeAndPixel(leds, sizeAdjusted, pixelAdjusted, midPosAdjusted);
   }
 
-  void adjustMapped(Coord3D &mapped, Coord3D sizeAdjusted, Coord3D pixelAdjusted, Coord3D midPosAdjusted) {
+  void adjustMapped(Leds &leds, Coord3D &mapped, Coord3D sizeAdjusted, Coord3D pixelAdjusted, Coord3D midPosAdjusted) {
     MultiplyProjection mp;
-    mp.adjustMapped(mapped, sizeAdjusted, pixelAdjusted, midPosAdjusted);
+    mp.adjustMapped(leds, mapped, sizeAdjusted, pixelAdjusted, midPosAdjusted);
   }
 
   void adjustXYZ(Leds &leds, Coord3D &pixel) {
@@ -211,7 +217,7 @@ class ReverseProjection: public Projection {
 
   public:
 
-  void adjustSizeAndPixel(Coord3D &sizeAdjusted, Coord3D &pixelAdjusted, Coord3D &midPosAdjusted) {
+  void adjustSizeAndPixel(Leds &leds, Coord3D &sizeAdjusted, Coord3D &pixelAdjusted, Coord3D &midPosAdjusted) {
     // UI Variables
     bool reverseX = mdl->getValue("reverse X");
     bool reverseY = mdl->getValue("reverse Y");
@@ -254,7 +260,7 @@ class MirrorProjection: public Projection {
 
   public:
 
-  void adjustSizeAndPixel(Coord3D &sizeAdjusted, Coord3D &pixelAdjusted, Coord3D &midPosAdjusted) {
+  void adjustSizeAndPixel(Leds &leds, Coord3D &sizeAdjusted, Coord3D &pixelAdjusted, Coord3D &midPosAdjusted) {
     // UI Variables
     bool mirrorX = mdl->getValue("mirror X");
     bool mirrorY = mdl->getValue("mirror Y");
@@ -306,7 +312,7 @@ class GroupingProjection: public Projection {
 
   public:
 
-  void adjustSizeAndPixel(Coord3D &sizeAdjusted, Coord3D &pixelAdjusted, Coord3D &midPosAdjusted) {
+  void adjustSizeAndPixel(Leds &leds, Coord3D &sizeAdjusted, Coord3D &pixelAdjusted, Coord3D &midPosAdjusted) {
     // UI Variables
     Coord3D grouping = mdl->getValue("Grouping");
     grouping = grouping.maximum(Coord3D{1, 1, 1}); // {1, 1, 1} is the minimum value
@@ -346,7 +352,7 @@ class TransposeProjection: public Projection {
 
   public:
 
-  void adjustSizeAndPixel(Coord3D &sizeAdjusted, Coord3D &pixelAdjusted, Coord3D &midPosAdjusted) {
+  void adjustSizeAndPixel(Leds &leds, Coord3D &sizeAdjusted, Coord3D &pixelAdjusted, Coord3D &midPosAdjusted) {
     // UI Variables
     bool transposeXY = mdl->getValue("transpose XY");
     bool transposeXZ = mdl->getValue("transpose XZ");
@@ -397,7 +403,7 @@ class PinwheelProjection: public Projection {
 
   public:
 
-  void adjustSizeAndPixel(Coord3D &sizeAdjusted, Coord3D &pixelAdjusted, Coord3D &midPosAdjusted) {
+  void adjustSizeAndPixel(Leds &leds, Coord3D &sizeAdjusted, Coord3D &pixelAdjusted, Coord3D &midPosAdjusted) {
     sizeAdjusted.x = mdl->getValue("petals");
     sizeAdjusted.y = 1;
     sizeAdjusted.z = 1;