diff --git a/wled00/FX.h b/wled00/FX.h
index f5e7a4e3e..f58f25241 100644
--- a/wled00/FX.h
+++ b/wled00/FX.h
@@ -379,6 +379,7 @@ typedef struct Segment {
     uint16_t aux0;  // custom var
     uint16_t aux1;  // custom var
     byte* data;     // effect data pointer
+    uint32_t* leds; // local leds[] array (may be a pointer to global)
     static uint16_t maxWidth, maxHeight;  // these define matrix width & height (max. segment dimensions)
 
   private:
@@ -461,6 +462,7 @@ typedef struct Segment {
       aux0(0),
       aux1(0),
       data(nullptr),
+      leds(nullptr),
       _capabilities(0),
       _dataLen(0),
       _t(nullptr)
@@ -485,6 +487,7 @@ typedef struct Segment {
       //#endif
       if (name) delete[] name;
       if (_t) delete _t;
+      if (leds) free(leds);
       deallocateData();
     }
 
@@ -492,7 +495,7 @@ typedef struct Segment {
     Segment& operator= (Segment &&orig) noexcept; // move assignment
 
 #ifdef WLED_DEBUG
-    size_t getSize() const { return sizeof(Segment) + (data?_dataLen:0) + (name?strlen(name):0) + (_t?sizeof(Transition):0); }
+    size_t getSize() const { return sizeof(Segment) + (data?_dataLen:0) + (name?strlen(name):0) + (_t?sizeof(Transition):0) + (leds?sizeof(CRGB)*length():0); }
 #endif
 
     inline bool     getOption(uint8_t n) const { return ((options >> n) & 0x01); }
@@ -533,7 +536,7 @@ typedef struct Segment {
       * Safe to call from interrupts and network requests.
       */
     inline void markForReset(void) { reset = true; }  // setOption(SEG_OPTION_RESET, true)
-    inline void setUpLeds(void) {} // legacy filler (should be removed)
+    void setUpLeds(void); // local double buffer/lossless getPixelColor()
 
     // transition functions
     void     startTransition(uint16_t dur); // transition has to start before actual segment values change
diff --git a/wled00/FX_2Dfcn.cpp b/wled00/FX_2Dfcn.cpp
index 5a5720b33..452388249 100644
--- a/wled00/FX_2Dfcn.cpp
+++ b/wled00/FX_2Dfcn.cpp
@@ -199,6 +199,8 @@ void /*IRAM_ATTR*/ Segment::setPixelColorXY(int x, int y, uint32_t col)
   if (Segment::maxHeight==1) return; // not a matrix set-up
   if (x >= virtualWidth() || y >= virtualHeight() || x<0 || y<0) return;  // if pixel would fall out of virtual segment just exit
 
+  if (leds) leds[XY(x,y)] = col;
+
   uint8_t _bri_t = currentBri(on ? opacity : 0);
   if (_bri_t < 255) {
     byte r = scale8(R(col), _bri_t);
@@ -284,6 +286,7 @@ void Segment::setPixelColorXY(float x, float y, uint32_t col, bool aa)
 
 // returns RGBW values of pixel
 uint32_t Segment::getPixelColorXY(uint16_t x, uint16_t y) {
+  if (leds) return leds[XY(x,y)];
   if (reverse  ) x = virtualWidth()  - x - 1;
   if (reverse_y) y = virtualHeight() - y - 1;
   if (transpose) { uint16_t t = x; x = y; y = t; } // swap X & Y if segment transposed
diff --git a/wled00/FX_fcn.cpp b/wled00/FX_fcn.cpp
index e0f132cd1..7c97c9b67 100644
--- a/wled00/FX_fcn.cpp
+++ b/wled00/FX_fcn.cpp
@@ -85,9 +85,11 @@ Segment::Segment(const Segment &orig) {
   data = nullptr;
   _dataLen = 0;
   _t = nullptr;
+  leds = nullptr;
   if (orig.name) { name = new char[strlen(orig.name)+1]; if (name) strcpy(name, orig.name); }
   if (orig.data) { if (allocateData(orig._dataLen)) memcpy(data, orig.data, orig._dataLen); }
   if (orig._t)   { _t = new Transition(orig._t->_dur, orig._t->_briT, orig._t->_cctT, orig._t->_colorT); }
+  if (orig.leds) { leds = (uint32_t*)malloc(sizeof(uint32_t)*length()); if (leds) memcpy(leds, orig.leds, sizeof(uint32_t)*length()); }
 }
 
 // move constructor
@@ -98,6 +100,7 @@ Segment::Segment(Segment &&orig) noexcept {
   orig.data = nullptr;
   orig._dataLen = 0;
   orig._t   = nullptr;
+  orig.leds = nullptr;
 }
 
 // copy assignment
@@ -107,6 +110,7 @@ Segment& Segment::operator= (const Segment &orig) {
     // clean destination
     if (name) delete[] name;
     if (_t)   delete _t;
+    if (leds) free(leds);
     deallocateData();
     // copy source
     memcpy((void*)this, (void*)&orig, sizeof(Segment));
@@ -115,10 +119,12 @@ Segment& Segment::operator= (const Segment &orig) {
     data = nullptr;
     _dataLen = 0;
     _t = nullptr;
+    leds = nullptr;
     // copy source data
     if (orig.name) { name = new char[strlen(orig.name)+1]; if (name) strcpy(name, orig.name); }
     if (orig.data) { if (allocateData(orig._dataLen)) memcpy(data, orig.data, orig._dataLen); }
     if (orig._t)   { _t = new Transition(orig._t->_dur, orig._t->_briT, orig._t->_cctT, orig._t->_colorT); }
+    if (orig.leds) { leds = (uint32_t*)malloc(sizeof(uint32_t)*length()); if (leds) memcpy(leds, orig.leds, sizeof(uint32_t)*length()); }
   }
   return *this;
 }
@@ -128,6 +134,7 @@ Segment& Segment::operator= (Segment &&orig) noexcept {
   //DEBUG_PRINTLN(F("-- Moving segment --"));
   if (this != &orig) {
     if (name) delete[] name; // free old name
+    if (leds) free(leds);
     deallocateData(); // free old runtime data
     if (_t) delete _t;
     memcpy((void*)this, (void*)&orig, sizeof(Segment));
@@ -135,6 +142,7 @@ Segment& Segment::operator= (Segment &&orig) noexcept {
     orig.data = nullptr;
     orig._dataLen = 0;
     orig._t   = nullptr;
+    orig.leds = nullptr;
   }
   return *this;
 }
@@ -174,12 +182,28 @@ void Segment::deallocateData() {
   */
 void Segment::resetIfRequired() {
   if (reset) {
+    if (leds) { free(leds); leds = nullptr; }
     deallocateData();
     next_time = 0; step = 0; call = 0; aux0 = 0; aux1 = 0;
     reset = false; // setOption(SEG_OPTION_RESET, false);
   }
 }
 
+void Segment::setUpLeds() {
+  // deallocation happens in resetIfRequired() as it is called when segment changes or in destructor
+  if (useGlobalLedBuffer) return; // TODO optional seg buffer for FX without lossy restore due to opacity
+
+  // no global buffer
+  if (leds == nullptr && length() > 0) { //softhack007 quickfix - avoid malloc(0) which is undefined behaviour (should not happen, but i've seen it)
+    //#if defined(ARDUINO_ARCH_ESP32) && defined(WLED_USE_PSRAM)
+    //if (psramFound())
+    //  leds = (CRGB*)ps_malloc(sizeof(CRGB)*length());   // softhack007 disabled; putting leds into psram leads to horrible slowdown on WROVER boards
+    //else
+    //#endif
+    leds = (uint32_t *)calloc(length(), sizeof(uint32_t));
+  }
+}
+
 CRGBPalette16 &Segment::loadPalette(CRGBPalette16 &targetPalette, uint8_t pal) {
   static unsigned long _lastPaletteChange = 0; // perhaps it should be per segment
   static CRGBPalette16 randomPalette = CRGBPalette16(DEFAULT_COLOR);
@@ -592,6 +616,8 @@ void IRAM_ATTR Segment::setPixelColor(int i, uint32_t col)
   }
 #endif
 
+  if (leds) leds[i] = col;
+
   uint16_t len = length();
   uint8_t _bri_t = currentBri(on ? opacity : 0);
   if (_bri_t < 255) {
@@ -691,6 +717,8 @@ uint32_t Segment::getPixelColor(int i)
   }
 #endif
 
+  if (leds) return leds[i];
+
   if (reverse) i = virtualLength() - i - 1;
   i *= groupLength();
   i += start;
diff --git a/wled00/bus_manager.cpp b/wled00/bus_manager.cpp
index a3807dbe1..822b527be 100644
--- a/wled00/bus_manager.cpp
+++ b/wled00/bus_manager.cpp
@@ -147,18 +147,11 @@ void BusDigital::show() {
       else pix += _skip;
       PolyBus::setPixelColor(_busPtr, _iType, pix, c, co);
     }
-    PolyBus::show(_busPtr, _iType);
   } else {
     PolyBus::applyPostAdjustments(_busPtr, _iType);
-    PolyBus::show(_busPtr, _iType);
-    // now restore (as close as possible) previous colors
-    // warning: this may not be the best idea as the buffer may still be in use
-    for (size_t i=0; i<_len; i++) {
-      uint8_t co = _colorOrderMap.getPixelColorOrder(i+_start, _colorOrder);
-      setPixelColor(i, restoreColorLossy(PolyBus::getPixelColor(_busPtr, _iType, i, co), _bri));
-    }
   }
-  PolyBus::setBrightness(_busPtr, _iType, 255); // restore full brightness
+  PolyBus::show(_busPtr, _iType);
+  PolyBus::setBrightness(_busPtr, _iType, 255); // restore full brightness at bus level (setting unscaled pixel color)
 }
 
 bool BusDigital::canShow() {
@@ -243,7 +236,7 @@ uint32_t BusDigital::getPixelColor(uint16_t pix) {
       }
       return c;
     }
-    return PolyBus::getPixelColor(_busPtr, _iType, pix, co);
+    return restoreColorLossy(PolyBus::getPixelColor(_busPtr, _iType, pix, co), _bri);
   }
 }