diff --git a/wled00/FX.cpp b/wled00/FX.cpp
index 424573f567..635264be02 100644
--- a/wled00/FX.cpp
+++ b/wled00/FX.cpp
@@ -9502,36 +9502,32 @@ uint16_t mode_particleSparkler(void) {
   // Particle System settings
   PartSys->updateSystem(); // update system properties (dimensions and data pointers)
 
-  sparklersettings.wrap = SEGMENT.check2;
-  sparklersettings.bounce = !SEGMENT.check2;
+  sparklersettings.wrap = !SEGMENT.check2;
+  sparklersettings.bounce = SEGMENT.check2; // note: bounce always takes priority over wrap
 
   numSparklers = PartSys->numSources;
-  PartSys->setMotionBlur(SEGMENT.custom2); // anable motion blur
-  //PartSys->setParticleSize(SEGMENT.check3); // 1 or 2 pixel rendering
+  PartSys->setMotionBlur(SEGMENT.custom2); // anable motion blur/overlay
+  //PartSys->setSmearBlur(SEGMENT.custom2); // anable smearing blur
 
   for (uint32_t i = 0; i < numSparklers; i++) {
     PartSys->sources[i].source.hue = hw_random16();
-    PartSys->sources[i].var = SEGMENT.intensity >> 4 ;
-    PartSys->sources[i].minLife = 150 + (SEGMENT.intensity >> 1);
-    PartSys->sources[i].maxLife = 200 + SEGMENT.intensity;
+    PartSys->sources[i].var = 0; // sparks stationary
+    PartSys->sources[i].minLife = 150 + SEGMENT.intensity;
+    PartSys->sources[i].maxLife = 250 + (SEGMENT.intensity << 2);
     uint32_t speed = SEGMENT.speed >> 1;
-    if(SEGMENT.check1) // invert spray speed
-      speed = -speed;
+    if(SEGMENT.check1) // sparks move (slide option)
+      PartSys->sources[i].var = SEGMENT.intensity >> 3;
     PartSys->sources[i].source.vx = speed; // update speed, do not change direction
     PartSys->sources[i].source.ttl = 400; // replenish its life (setting it perpetual uses more code)
     PartSys->sources[i].sat = SEGMENT.custom1; // color saturation
     PartSys->sources[i].size = SEGMENT.check3 ? 120 : 0;
-    for(uint32_t j = 0; j < 2; j++) { // move twice for higher speeds
-      PartSys->particleMoveUpdate(PartSys->sources[i].source, PartSys->sources[i].sourceFlags, &sparklersettings); //move sparkler 1243972-
-    }
-  }
-
-  for (uint32_t i = 0; i < PartSys->usedParticles; i++) {
-    if (PartSys->particles[i].ttl > 10) PartSys->particles[i].ttl -= 10; //ttl is linked to brightness, this allows to use higher brightness but still a short spark lifespan
-    else PartSys->particles[i].ttl = 0;
+    if(SEGMENT.speed == 255) // random position at highest speed setting
+      PartSys->sources[i].source.x = hw_random16(PartSys->maxX);
+    else
+      PartSys->particleMoveUpdate(PartSys->sources[i].source, PartSys->sources[i].sourceFlags, &sparklersettings); //move sparkler
   }
 
-  numSparklers = min(1 + (SEGMENT.custom3 >> 2), (int)numSparklers);  // set used sparklers, 1 to 8
+  numSparklers = min(1 + (SEGMENT.custom3 >> 1), (int)numSparklers);  // set used sparklers, 1 to 16
 
   if (SEGENV.aux0 != SEGMENT.custom3) { //number of used sparklers changed, redistribute
     for (uint32_t i = 1; i < numSparklers; i++) {
@@ -9547,9 +9543,14 @@ uint16_t mode_particleSparkler(void) {
 
   PartSys->update(); // update and render
 
+  for(uint32_t i = 0; i < PartSys->usedParticles; i++) {
+    if(PartSys->particles[i].ttl > (64 - (SEGMENT.intensity >> 2))) PartSys->particles[i].ttl -= (64 - (SEGMENT.intensity >> 2)); //ttl is linked to brightness, this allows to use higher brightness but still a short spark lifespan
+    else PartSys->particles[i].ttl = 0;
+  }
+
   return FRAMETIME;
 }
-static const char _data_FX_MODE_PS_SPARKLER[] PROGMEM = "PS Sparkler@Speed,!,Saturation,Blur,Sparklers,Direction,Wrap/Bounce,Large;,!;!;1;pal=0,sx=50,ix=200,c1=0,c2=0,c3=0,o1=1,o2=1";
+static const char _data_FX_MODE_PS_SPARKLER[] PROGMEM = "PS Sparkler@Speed,!,Saturation,Blur,Sparklers,Slide,Bounce,Large;,!;!;1;pal=0,sx=255,ix=200,c1=0,c2=0,c3=6";
 
 /*
 Particle based Hourglass, particles falling at defined intervals
diff --git a/wled00/FXparticleSystem.cpp b/wled00/FXparticleSystem.cpp
index aa08df6f13..ffc641a175 100644
--- a/wled00/FXparticleSystem.cpp
+++ b/wled00/FXparticleSystem.cpp
@@ -582,7 +582,9 @@ void ParticleSystem2D::ParticleSys_render() {
 
   // handle blurring and framebuffer update
   if (framebuffer) {
-    if(!pmem->inTransition)  useAdditiveTransfer = false; // additive rendering is only used in PS FX transitions
+    //if(!pmem->inTransition)  useAdditiveTransfer = false; // additive rendering is only used in PS FX transitions
+    if(strip.getCurrSegmentId() > 0) useAdditiveTransfer = true; //!!! test for overlay rendering
+    else useAdditiveTransfer = false;
     // handle buffer blurring or clearing
     bool bufferNeedsUpdate = (!pmem->inTransition || pmem->inTransition == effectID); // not a transition; or new FX: update buffer (blur, or clear)
 
@@ -592,8 +594,7 @@ void ParticleSystem2D::ParticleSys_render() {
           int index = y * (maxXpixel + 1);
           for (int32_t x = 0; x <= maxXpixel; x++) {
             if (!renderSolo) { // sharing the framebuffer with another segment: read buffer back from segment
-              uint32_t yflipped = maxYpixel - y;
-              framebuffer[index] = SEGMENT.getPixelColorXY(x, yflipped); // read from segment
+              framebuffer[index] = SEGMENT.getPixelColorXY(x, y); // read from segment
             }
             fast_color_scale(framebuffer[index], globalBlur); // note: could skip if only globalsmear is active but usually they are both active and scaling is fast enough
             index++;
@@ -639,8 +640,6 @@ void ParticleSystem2D::ParticleSys_render() {
       SEGMENT.fill(BLACK); //clear the buffer before rendering next frame
   }
 
-  bool wrapX = particlesettings.wrapX; // use local variables for faster access
-  bool wrapY = particlesettings.wrapY;
   // go over particles and render them to the buffer
   for (uint32_t i = 0; i < usedParticles; i++) {
     if (particles[i].ttl == 0 || particleFlags[i].outofbounds)
@@ -660,7 +659,7 @@ void ParticleSystem2D::ParticleSys_render() {
         baseRGB = (CRGB)baseHSV; // convert back to RGB
       }
     }
-    renderParticle(i, brightness, baseRGB, wrapX, wrapY);
+    renderParticle(i, brightness, baseRGB, particlesettings.wrapX, particlesettings.wrapY);
   }
 
   if (particlesize > 0) {
@@ -1530,7 +1529,7 @@ void ParticleSystem1D::ParticleSys_render() {
     else
       SEGMENT.fill(BLACK); // clear the buffer before rendering to it
   }
-  bool wrap = particlesettings.wrap; // local copy for speed
+
   // go over particles and render them to the buffer
   for (uint32_t i = 0; i < usedParticles; i++) {
     if ( particles[i].ttl == 0 || particleFlags[i].outofbounds)
@@ -1547,7 +1546,7 @@ void ParticleSystem1D::ParticleSys_render() {
         baseRGB = (CRGB)baseHSV; // convert back to RGB
       }
     }
-    renderParticle(i, brightness, baseRGB, wrap);
+    renderParticle(i, brightness, baseRGB, particlesettings.wrap);
   }
   // apply smear-blur to rendered frame
   if(globalSmear > 0) {