diff --git a/zoneb/bin/data/shaders/particles/update.frag b/zoneb/bin/data/shaders/particles/update.frag
index 4024ca1..5c4d0f9 100755
--- a/zoneb/bin/data/shaders/particles/update.frag
+++ b/zoneb/bin/data/shaders/particles/update.frag
@@ -112,12 +112,18 @@ void main()
   vec3 misc = texture(particles2, texCoordVarying.st).xyz;
   vec4 target = texture(particles3, texCoordVarying.st).xyzw;
 
-  float thermo = texture2D(u_v4l2cam, texCoordVarying.st).r;
+  float thermo = texture2D(u_v4l2cam, texCoordVarying.st/4).r;
 
-  float depth = texture(u_depth, texCoordVarying.st).x;
-  vec4 ray = texture(u_world, texCoordVarying.st);
+  vec2 subPix = mod(texCoordVarying.st / 4, 1.0);
+  float depth0 = texture(u_depth, texCoordVarying.st/4 - subPix).x;
+  float depth1 = texture(u_depth, texCoordVarying.st/4 - subPix + vec2(1, 1)).x;
+  vec4 ray0 = texture(u_world, texCoordVarying.st/4 - subPix);
+  vec4 ray1 = texture(u_world, texCoordVarying.st/4 - subPix + vec2(1, 1));
 
-  float vValid = (depth != 0 && ray.x != 0 && ray.y != 0) ? 1 : 0;
+  float depth = mix(depth0, depth1, length(subPix));
+  vec4 ray = mix(ray0, ray1, length(subPix));
+
+  float vValid = (depth0 != 0 && depth1 != 0 && ray.x != 0 && ray.y != 0) ? 1 : 0;
 
   vec4 posWorld = vec4(1);
   posWorld.z = -depth * 65535.0; // Remap to float range.
@@ -142,7 +148,7 @@ void main()
     thermo = misc.x;
   }
   else { // wandering
-    age += 0.1;
+    age += 0.02;
     // age += 0.01;
     thermo = misc.x;
   }
@@ -162,14 +168,16 @@ void main()
 
   if(age < 0.001) { // targetting
     target.w = 0;
-    if(random3(pos).x > pow(length(texCoordVarying.st - uHottest0.st)/5,16*16)+0) {
+    if(random3(pos).x > pow(length(texCoordVarying.st/4 - uHottest0.st)/5,16*16)+0) {
       vec3 H = uHottest3d0;
+      H.x *= -1;
       H.z *= -1;
       target.xyz = H + random3(pos);
       target.w = 1;
     }
-    else if(random3(pos).x > pow(length(texCoordVarying.st - uHottest1.st)/5,16*16)+0) {
+    else if(random3(pos).x > pow(length(texCoordVarying.st/4 - uHottest1.st)/5,16*16)+0) {
       vec3 H = uHottest3d1;
+      H.x *= -1;
       H.z *= -1;
       target.xyz = H + random3(pos);
       target.w = 1;
diff --git a/zoneb/src/ofApp.cpp b/zoneb/src/ofApp.cpp
index 3b28c3f..9e0622e 100644
--- a/zoneb/src/ofApp.cpp
+++ b/zoneb/src/ofApp.cpp
@@ -69,8 +69,8 @@ void ofApp::setupThermal()
 void ofApp::setupParticles()
 {
   // 1,000,000 particles
-  unsigned w = 512;
-  unsigned h = 512;
+  unsigned w = 512*4;
+  unsigned h = 512*4;
 
   particles.init(w, h, OF_PRIMITIVE_POINTS, false, 4);