diff --git a/APU.cpp b/APU.cpp
index 86f8cbf..7a85606 100644
--- a/APU.cpp
+++ b/APU.cpp
@@ -1,11 +1,10 @@
 #include "APU.h"
 #include <SDL2/SDL.h>
 //#include "audio_viewer.h"
-
 namespace APU
 {
     #define SAMPLING_FREQ 44100
-    #define AUDIO_BUFFER_SIZE 8192
+    #define AUDIO_BUFFER_SIZE 2048
     const float cycles_per_sample = 4194304.0f / SAMPLING_FREQ;
 
     SDL_AudioDeviceID sdlAudioDevice;
@@ -78,14 +77,6 @@ namespace APU
     uint16_t LFSR = 0;
 
 
-    void audioCallback(void * userdata, uint8_t * stream, int len)
-    {
-        for (int i=0;i<len;++i)
-        {
-            stream[i] = sound_buffer[(sound_start++)&(AUDIO_BUFFER_SIZE-1)];
-        }
-    }
-
     void silence()
     {
         SDL_PauseAudioDevice(sdlAudioDevice, 1);
@@ -98,7 +89,7 @@ namespace APU
 
     void init()
     {
-        SDL_AudioSpec audioSpec{SAMPLING_FREQ, AUDIO_U8, 1, 0, AUDIO_BUFFER_SIZE>>1, 0, 0, &audioCallback, NULL};
+        SDL_AudioSpec audioSpec{SAMPLING_FREQ, AUDIO_U8, 1, 0, AUDIO_BUFFER_SIZE, 0, 0, NULL, NULL};
         sdlAudioDevice = SDL_OpenAudioDevice(NULL, 0, &audioSpec, NULL, 0);
         resume();
         //samples_time=SDL_GetTicks();
@@ -438,7 +429,11 @@ namespace APU
 
             sound_buffer[(sound_pos++)&(AUDIO_BUFFER_SIZE-1)] = sample;
             //audio_viewer::addsample(sample);
-            //if (ear) last_1 = sound_pos;
+        }
+        if (sound_pos>=1000) {
+            SDL_QueueAudio(sdlAudioDevice, sound_buffer, sound_pos);
+            sound_pos = 0;
+            while (SDL_GetQueuedAudioSize(sdlAudioDevice) > 4096 ) {}
         }
      }
 }
\ No newline at end of file
diff --git a/gbscreen.cpp b/gbscreen.cpp
index d4c6b61..f295e0b 100644
--- a/gbscreen.cpp
+++ b/gbscreen.cpp
@@ -322,8 +322,8 @@ namespace gbscreen
             if ( (STAT&0x3)==3) {
                 uint16_t current_pixel = dots_in_scanline-80;
                 if (current_pixel<160) {
-                    uint8_t pixel = gb_pixels[current_pixel+LY*160];
-                    gb_pixels[current_pixel+LY*160] = pixel > line_buffer[current_pixel] ? pixel-1 : line_buffer[current_pixel];
+                    //uint8_t pixel = gb_pixels[current_pixel+LY*160];
+                    gb_pixels[current_pixel+LY*160] = line_buffer[current_pixel];// > line_buffer[current_pixel] ? pixel-1 : line_buffer[current_pixel];
                 }
             }
 
diff --git a/main.cpp b/main.cpp
index 0ca1aa6..26514e6 100644
--- a/main.cpp
+++ b/main.cpp
@@ -187,7 +187,7 @@ int main(int argc, char *argv[])
             bool fastload=false;
 
             // En cada bucle fem 10 pasos de la CPU, sino s'ofega
-            for (int i=0;i<5;++i) {
+            for (int i=0;i<20;++i) {
                 if (debug::isbreak(sm83::getPC(), 9)) {
                     debug::stop();
                     gbscreen::redraw();