diff --git a/platformio.ini b/platformio.ini
index c47ddbd3ad..13b45feb7c 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -1062,7 +1062,7 @@ AR_build_flags = -D USERMOD_AUDIOREACTIVE -D UM_AUDIOREACTIVE_USE_NEW_FFT ;; WLE
 AR_lib_deps = https://github.com/softhack007/arduinoFFT.git#develop @ 1.9.2      ;; used for USERMOD_AUDIOREACTIVE - optimized version, 10% faster on -S2/-C3
 
 animartrix_build_flags = -D USERMOD_ANIMARTRIX ;; WLEDMM usermod: CC BY-NC 3.0 licensed effects by Stefan Petrick
-animartrix_lib_deps = https://github.com/netmindz/animartrix.git#ccb11dd9a4ec4ff6e7bdf617f6651cced4ed9826 ;; Speed fixes
+animartrix_lib_deps = https://github.com/netmindz/animartrix.git#657f754783268b648e1d56b3cd31c810379d0c89 ;; Dirty state fix
 animartrix_lib_ignore = animartrix ;; to remove the animartrix lib dependancy (saves a few bytes)
 
 DMXin_build_flags = -D WLED_ENABLE_DMX_INPUT  ;; WLEDMM DMX physical input - requires ESP-IDF v4.4.x
diff --git a/wled00/FX.cpp b/wled00/FX.cpp
index 2b45d37aa3..ce5bdc7302 100644
--- a/wled00/FX.cpp
+++ b/wled00/FX.cpp
@@ -4763,7 +4763,7 @@ class AuroraWave {
       alive = true;
     }
 
-    CRGB getColorForLED(int ledIndex) {
+    CRGB getColorForLED(int ledIndex) const {
       if(ledIndex < center - width || ledIndex > center + width) return 0; //Position out of range of this wave
 
       CRGB rgb;
@@ -4818,7 +4818,7 @@ class AuroraWave {
       }
     };
 
-    bool stillAlive() {
+    bool stillAlive() const {
       return alive;
     };
 };
diff --git a/wled00/FX.h b/wled00/FX.h
index b47bd78718..4fac94a85c 100644
--- a/wled00/FX.h
+++ b/wled00/FX.h
@@ -421,7 +421,7 @@ typedef struct Segment {
     };
     size_t _dataLen;                   // WLEDMM uint16_t is too small
     static size_t _usedSegmentData;    // WLEDMM uint16_t is too small
-    void setPixelColorXY_fast(int x, int y,uint32_t c, uint32_t scaled_col, int cols, int rows); // set relative pixel within segment with color - faster, but no error checking!!!
+    void setPixelColorXY_fast(int x, int y,uint32_t c, uint32_t scaled_col, int cols, int rows) const; // set relative pixel within segment with color - faster, but no error checking!!!
 
     bool _isSimpleSegment = false;      // simple = no grouping or spacing - mirror, transpose or reverse allowed
     bool _isSuperSimpleSegment = false; // superSimple = no grouping or spacing, no mirror - only transpose or reverse allowed
@@ -609,7 +609,7 @@ typedef struct Segment {
     // transition functions
     void     startTransition(uint16_t dur); // transition has to start before actual segment values change
     void     handleTransition(void);
-    uint16_t progress(void); //transition progression between 0-65535
+    uint16_t progress(void) const; //transition progression between 0-65535
 
     // WLEDMM method inlined for speed (its called at each setPixelColor)
     inline uint8_t  currentBri(uint8_t briNew, bool useCct = false) {
@@ -624,7 +624,7 @@ typedef struct Segment {
 
     uint8_t  currentMode(uint8_t modeNew);
     uint32_t currentColor(uint8_t slot, uint32_t colorNew);
-    CRGBPalette16 &loadPalette(CRGBPalette16 &tgt, uint8_t pal);
+    CRGBPalette16 &loadPalette(CRGBPalette16 &tgt, uint8_t pal) const;
     void     setCurrentPalette(void);
 
     // 1D strip
@@ -724,10 +724,21 @@ typedef struct Segment {
 
         uint32_t scaled_col = (_brightness == 255) ? col : color_fade(col, _brightness);  // calculate final color
         setPixelColorXY_fast(x, y, col, scaled_col, int(_2dWidth), int(_2dHeight));       // call "fast" function
-  }
-}
+      }
+    }
+    inline uint32_t getPixelColorXY(int x, int y) const {
+      // minimal sanity checks
+      if (!_isValid2D) return 0;                                                // not active
+      if ((unsigned(x) >= _2dWidth) || (unsigned(y) >= _2dHeight)) return 0 ;   // check if (x,y) are out-of-range - due to 2's complement, this also catches negative values
+      if (ledsrgb) {
+        int i = x + y*_2dWidth; // avoid error checking done by XY() - be optimistic about ranges of x and y
+        return RGBW32(ledsrgb[i].r, ledsrgb[i].g, ledsrgb[i].b, 0);
+      }
+      else return getPixelColorXY_part2(x, y, int(_2dWidth), int(_2dHeight));    // call "no ledsrgb" function to retrieve pixel from bus driver
+    }
 #else
     void setPixelColorXY(int x, int y, uint32_t c); // set relative pixel within segment with color
+    uint32_t __attribute__((pure)) getPixelColorXY(int x, int y)  const { return getPixelColorXY_slow(x,y);}
 #endif
     inline void setPixelColorXY(unsigned x, unsigned y, uint32_t c)               { setPixelColorXY(int(x), int(y), c); }
     inline void setPixelColorXY(int x, int y, byte r, byte g, byte b, byte w = 0) { setPixelColorXY(x, y, RGBW32(r,g,b,w)); }
@@ -738,7 +749,8 @@ typedef struct Segment {
     inline void setPixelColorXY(float x, float y, byte r, byte g, byte b, byte w = 0, bool aa = true) { setPixelColorXY(x, y, RGBW32(r,g,b,w), aa); }
     inline void setPixelColorXY(float x, float y, CRGB c, bool aa = true)                             { setPixelColorXY(x, y, RGBW32(c.r,c.g,c.b,0), aa); }
     //#endif
-    uint32_t __attribute__((pure)) getPixelColorXY(int x, int y)  const;
+    uint32_t __attribute__((pure)) getPixelColorXY_part2(int x, int y, int cols, int rows)  const;
+    uint32_t __attribute__((pure)) getPixelColorXY_slow(int x, int y)  const;
     // 2D support functions
     void blendPixelColorXY(uint16_t x, uint16_t y, uint32_t color, uint8_t blend);
     inline void blendPixelColorXY(uint16_t x, uint16_t y, CRGB c, uint8_t blend)  { blendPixelColorXY(x, y, RGBW32(c.r,c.g,c.b,0), blend); }
diff --git a/wled00/FX_2Dfcn.cpp b/wled00/FX_2Dfcn.cpp
index 1285ee78d4..bbcc4f98e9 100644
--- a/wled00/FX_2Dfcn.cpp
+++ b/wled00/FX_2Dfcn.cpp
@@ -294,7 +294,7 @@ void Segment::startFrame(void) {
 
 // Simplified version of Segment::setPixelColorXY - without error checking. Does not support grouping or spacing
 // * expects scaled color (final brightness) as additional input parameter, plus segment  virtualWidth() and virtualHeight()
-void IRAM_ATTR __attribute__((hot)) Segment::setPixelColorXY_fast(int x, int y, uint32_t col, uint32_t scaled_col, int cols, int rows) //WLEDMM
+void IRAM_ATTR __attribute__((hot)) Segment::setPixelColorXY_fast(int x, int y, uint32_t col, uint32_t scaled_col, int cols, int rows) const //WLEDMM
 {
   unsigned i = UINT_MAX;
   bool sameColor = false;
@@ -476,8 +476,18 @@ void Segment::setPixelColorXY(float x, float y, uint32_t col, bool aa, bool fast
 #endif
 }
 
-// returns RGBW values of pixel
-uint32_t IRAM_ATTR_YN Segment::getPixelColorXY(int x, int y) const {
+// WLEDMM this function is only called by getPixelColorXY, in case we don't have the ledsrgb buffer!
+uint32_t IRAM_ATTR_YN Segment::getPixelColorXY_part2(int x, int y, int cols, int rows) const {
+  if (reverse  ) x = cols - x - 1;
+  if (reverse_y) y = rows - y - 1;
+  if (transpose) std::swap(x,y); // swap X & Y if segment transposed
+  const uint_fast16_t groupLength_ = groupLength(); // WLEDMM small optimization
+  x *= groupLength_; // expand to physical pixels
+  y *= groupLength_; // expand to physical pixels
+  return strip.getPixelColorXYRestored(start + x, startY + y);
+}
+
+uint32_t IRAM_ATTR_YN Segment::getPixelColorXY_slow(int x, int y) const { // WLEDMM fallback for non-fastpath builds
   if (x<0 || y<0 || !isActive()) return 0; // not active or out-of range
   if (ledsrgb) {
     int i = XY(x,y);
diff --git a/wled00/FX_fcn.cpp b/wled00/FX_fcn.cpp
index 7ef0be38ce..6210d0a1c9 100644
--- a/wled00/FX_fcn.cpp
+++ b/wled00/FX_fcn.cpp
@@ -311,7 +311,7 @@ void Segment::setUpLeds() {
   }
 }
 
-CRGBPalette16 &Segment::loadPalette(CRGBPalette16 &targetPalette, uint8_t pal) {
+CRGBPalette16 &Segment::loadPalette(CRGBPalette16 &targetPalette, uint8_t pal) const {
   static unsigned long _lastPaletteChange = millis() - 990000; // perhaps it should be per segment //WLEDMM changed init value to avoid pure orange after startup
   static CRGBPalette16 randomPalette = CRGBPalette16(DEFAULT_COLOR);
   static CRGBPalette16 prevRandomPalette = CRGBPalette16(CRGB(BLACK));
@@ -452,7 +452,7 @@ void Segment::startTransition(uint16_t dur) {
 }
 
 // transition progression between 0-65535
-uint16_t IRAM_ATTR_YN Segment::progress() {
+uint16_t IRAM_ATTR_YN Segment::progress() const {
   if (!transitional || !_t) return 0xFFFFU;
   unsigned long timeNow = millis();
   if (timeNow - _t->_start > _t->_dur || _t->_dur == 0) return 0xFFFFU;
diff --git a/wled00/bus_manager.cpp b/wled00/bus_manager.cpp
index e414bf61ef..5dd51d0afb 100644
--- a/wled00/bus_manager.cpp
+++ b/wled00/bus_manager.cpp
@@ -1056,7 +1056,7 @@ BusHub75Matrix::BusHub75Matrix(BusConfig &bc) : Bus(bc.type, bc.start, bc.autoWh
   USER_PRINT(F("heap usage: ")); USER_PRINTLN(int(lastHeap - ESP.getFreeHeap()));
 }
 
-void __attribute__((hot)) BusHub75Matrix::setPixelColor(uint16_t pix, uint32_t c) {
+void __attribute__((hot)) IRAM_ATTR BusHub75Matrix::setPixelColor(uint16_t pix, uint32_t c) {
   if (!_valid || pix >= _len) return;
   // if (_cct >= 1900) c = colorBalanceFromKelvin(_cct, c); //color correction from CCT
 
@@ -1097,12 +1097,12 @@ void __attribute__((hot)) BusHub75Matrix::setPixelColor(uint16_t pix, uint32_t c
   #endif
 }
 
-uint32_t BusHub75Matrix::getPixelColor(uint16_t pix) const {
+uint32_t IRAM_ATTR BusHub75Matrix::getPixelColor(uint16_t pix) const {
   if (!_valid || pix >= _len || !_ledBuffer) return BLACK;
   return uint32_t(_ledBuffer[pix].scale8(_bri)) & 0x00FFFFFF;  // scale8() is needed to mimic NeoPixelBus, which returns scaled-down colours
 }
 
-uint32_t __attribute__((hot)) BusHub75Matrix::getPixelColorRestored(uint16_t pix) const {
+uint32_t __attribute__((hot)) IRAM_ATTR BusHub75Matrix::getPixelColorRestored(uint16_t pix) const {
   if (!_valid || pix >= _len || !_ledBuffer) return BLACK;
   return uint32_t(_ledBuffer[pix]) & 0x00FFFFFF;
 }
@@ -1117,7 +1117,7 @@ void BusHub75Matrix::setBrightness(uint8_t b, bool immediate) {
   if (display) display->setBrightness(_bri);
 }
 
-void __attribute__((hot)) BusHub75Matrix::show(void) {
+void __attribute__((hot)) IRAM_ATTR BusHub75Matrix::show(void) {
   if (!_valid) return;
   MatrixPanel_I2S_DMA* display = BusHub75Matrix::activeDisplay;
   if (!display) return;
@@ -1277,8 +1277,8 @@ void BusManager::removeAll() {
   lastend = 0;
 }
 
-void BusManager::show() {
-  for (uint8_t i = 0; i < numBusses; i++) {
+void __attribute__((hot)) BusManager::show() {
+  for (unsigned i = 0; i < numBusses; i++) {
     busses[i]->show();
   }
 }
diff --git a/wled00/bus_manager.h b/wled00/bus_manager.h
index cef0286d00..69f3aa2d74 100644
--- a/wled00/bus_manager.h
+++ b/wled00/bus_manager.h
@@ -191,7 +191,7 @@ class Bus {
     inline static void    setGlobalAWMode(uint8_t m)  { if (m < 5) _gAWM = m; else _gAWM = AW_GLOBAL_DISABLED; }
     inline static uint8_t getGlobalAWMode()           { return _gAWM; }
 
-    inline uint32_t restore_Color_Lossy(uint32_t c, uint8_t restoreBri) const { // shamelessly grabbed from upstream, who grabbed from NPB, who ..
+    inline static uint32_t restore_Color_Lossy(uint32_t c, uint8_t restoreBri) { // shamelessly grabbed from upstream, who grabbed from NPB, who ..
       if (restoreBri < 255) {
         uint8_t* chan = (uint8_t*) &c;
         for (uint_fast8_t i=0; i<4; i++) {