diff --git a/Makefile b/Makefile
index ebf0739..f7da04c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 # ENV
 
 FORGE_MAKE ?= $(MAKE) -C forge-steel -f Makefile.dev
-RUN_ARGS ?= -tf --project=project -is=1080 --demo
+RUN_ARGS ?= -tf --project=project -is=480 --demo
 
 # FILES
 
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..79c1ea4
--- /dev/null
+++ b/README.md
@@ -0,0 +1,7 @@
+https://freedom251.com/raspberry-pi-5-how-to-make-composite-video-output/
+
+```txt
+enable_tvout=0
+sdtv_mode=2
+sdtv_aspect=1
+```
diff --git a/project/inc_fx.glsl b/project/inc_fx.glsl
index e8aa96a..b7b05e0 100644
--- a/project/inc_fx.glsl
+++ b/project/inc_fx.glsl
@@ -347,6 +347,7 @@ subroutine(fx_stage_sub) vec4 fx_11(vec2 vUV, sampler2D previous, sampler2D feed
 // FX 12 : Game Of Life
 subroutine(fx_stage_sub) vec4 fx_12(vec2 vUV, sampler2D previous, sampler2D feedback, int seed, vec3 b1, vec2 f1, vec3 b2, vec2 f2, vec3 b3, vec2 f3, vec3 m0)
 {
+    return texture(previous, uv0); // TODO disabled
     // start
 
 	vec2 uv0 = vUV.st;
@@ -526,6 +527,7 @@ subroutine(fx_stage_sub) vec4 fx_14(vec2 vUV, sampler2D previous, sampler2D feed
 // FX 15 : Random
 subroutine(fx_stage_sub) vec4 fx_15(vec2 vUV, sampler2D previous, sampler2D feedback, int seed, vec3 b1, vec2 f1, vec3 b2, vec2 f2, vec3 b3, vec2 f3, vec3 m0)
 {
+    return texture(previous, uv0); // TODO disabled
 	int fx = int(randTime(seed + 100) * 14);
 
     if (fx == 0) {