diff --git a/MicroDexed.ino b/MicroDexed.ino
index 407574e..3e43b22 100644
--- a/MicroDexed.ino
+++ b/MicroDexed.ino
@@ -236,7 +236,7 @@ extern void getNoteName(char* noteName, uint8_t noteNumber);
 void setup()
 {
   // Start audio system
-  AudioNoInterrupts();
+  //AudioNoInterrupts();
   AudioMemory(AUDIO_MEM);
 
 #ifdef DISPLAY_LCD_SPI
@@ -259,6 +259,7 @@ void setup()
 #endif
 #endif
 
+
 #ifdef DEBUG
   generate_version_string(version_string, sizeof(version_string));
 
@@ -269,7 +270,11 @@ void setup()
   Serial.println(version_string);
   Serial.print(F("CPU-Speed: "));
   Serial.print(F_CPU / 1000000.0, 1);
-  Serial.println(F(" MHz"));
+  Serial.print(F(" MHz / "));
+  Serial.print(NUM_DEXED, DEC);
+  Serial.print(F(" Instances with "));
+  Serial.print(MAX_NOTES);
+  Serial.println(F(" notes for each instance"));
   Serial.println(F("<setup start>"));
   Serial.flush();
 #endif
@@ -473,7 +478,7 @@ void setup()
   master_mixer_r.gain(3, 0.0);
   master_mixer_l.gain(3, 0.0);
 
-  AudioInterrupts();
+  //AudioInterrupts();
 
 #ifdef DEBUG
   Serial.println(F("<setup end>"));
@@ -1504,11 +1509,7 @@ void check_configuration(void)
     configuration.dexed[instance_id].pan = constrain(configuration.dexed[instance_id].pan, PANORAMA_MIN, PANORAMA_MAX);
     configuration.dexed[instance_id].transpose = constrain(configuration.dexed[instance_id].transpose, TRANSPOSE_MIN, TRANSPOSE_MAX);
     configuration.dexed[instance_id].tune = constrain(configuration.dexed[instance_id].tune, TUNE_MIN, TUNE_MAX);
-#if NUM_DEXED > 1
-    configuration.dexed[instance_id].polyphony = constrain(configuration.dexed[instance_id].polyphony + ((POLYPHONY_MAX % 2) - instance_id)  , POLYPHONY_MIN, POLYPHONY_MAX / 2);
-#else
     configuration.dexed[instance_id].polyphony = constrain(configuration.dexed[instance_id].polyphony, POLYPHONY_MIN, POLYPHONY_MAX);
-#endif
     configuration.dexed[instance_id].velocity_level = constrain(configuration.dexed[instance_id].velocity_level, VELOCITY_LEVEL_MIN, VELOCITY_LEVEL_MAX);
     configuration.dexed[instance_id].engine = constrain(configuration.dexed[instance_id].engine, ENGINE_MIN, ENGINE_MAX);
     configuration.dexed[instance_id].monopoly = constrain(configuration.dexed[instance_id].monopoly, MONOPOLY_MIN, MONOPOLY_MAX);
@@ -1576,11 +1577,7 @@ void init_configuration(void)
     configuration.dexed[instance_id].pan = PANORAMA_DEFAULT;
     configuration.dexed[instance_id].transpose = TRANSPOSE_DEFAULT;
     configuration.dexed[instance_id].tune = TUNE_DEFAULT;
-#if NUM_DEXED > 1
-    configuration.dexed[instance_id].polyphony = (POLYPHONY_DEFAULT / 2) + (POLYPHONY_DEFAULT % 2) - instance_id;
-#else
     configuration.dexed[instance_id].polyphony = POLYPHONY_DEFAULT;
-#endif
     configuration.dexed[instance_id].velocity_level = VELOCITY_LEVEL_DEFAULT;
     configuration.dexed[instance_id].engine = ENGINE_DEFAULT;
     configuration.dexed[instance_id].monopoly = MONOPOLY_DEFAULT;
@@ -1616,18 +1613,8 @@ void init_configuration(void)
     configuration.performance.bank[instance_id] = SYSEXBANK_DEFAULT;
     configuration.performance.voice[instance_id] = SYSEXSOUND_DEFAULT;
 
-#if NUM_DEXED > 1
-    configuration.dexed[instance_id].polyphony = POLYPHONY_DEFAULT / 2;
-#else
-    if (instance_id == 0)
-    {
-      configuration.dexed[instance_id].polyphony = POLYPHONY_DEFAULT;
-    }
-    else
-    {
-      configuration.dexed[instance_id].polyphony = 0;
-    }
-#endif
+    configuration.dexed[instance_id].polyphony = POLYPHONY_DEFAULT;
+
 
 #if NUM_DEXED > 1
     MicroDexed[instance_id]->controllers.refresh();
diff --git a/UI.hpp b/UI.hpp
index 0208a02..c97b446 100644
--- a/UI.hpp
+++ b/UI.hpp
@@ -2041,9 +2041,6 @@ void UI_func_polyphony(uint8_t param)
     {
       if (LCDML.BT_checkDown())
       {
-#if NUM_DEXED > 1
-        if (configuration.dexed[0].polyphony + configuration.dexed[1].polyphony + 1 <= POLYPHONY_MAX)
-#endif
           configuration.dexed[selected_instance_id].polyphony = constrain(configuration.dexed[selected_instance_id].polyphony + 1, POLYPHONY_MIN, POLYPHONY_MAX);
       }
       else if (LCDML.BT_checkUp())
diff --git a/config.h b/config.h
index 53ef93f..8c55f73 100644
--- a/config.h
+++ b/config.h
@@ -56,7 +56,7 @@
 // sed -i.orig 's/^#define USB_MIDI_SYSEX_MAX 290/#define USB_MIDI_SYSEX_MAX 4104/' /usr/local/arduino-teensy-1.8.12/hardware/teensy/avr/cores/teensy3/usb_midi.h
 //#define USB_MIDI_SYSEX_MAX 4104
 
-#define VERSION "0.9.9o"
+#define VERSION "0.9.9p"
 
 //*************************************************************************************************
 //* DEVICE SETTINGS
@@ -273,40 +273,53 @@
 #define USBCON 1
 #endif
 
-#if defined(__IMXRT1062__) //Teensy-4.0
-#undef MIDI_DEVICE_USB
+// Teensy-4.x settings
+#if defined(__IMXRT1062__) //Teensy-4.x
 #define MAX_NOTES 16
 #define TEENSY4
 #endif
 
-#if defined(__MK66FX1M0__) // Teensy-3.6
 // Teensy-3.6 settings
-#define MIDI_DEVICE_USB_HOST 1
-#if defined(USE_FX)
-#if NUM_DEXED == 1
-#if F_CPU >= 256
-#define MAX_NOTES 20
-#elif F_CPU >= 216
-#define MAX_NOTES 16
-#else
-#define MAX_NOTES 12
-#endif // F_CPU >= 256
-#else // NUM_DEXED != 1
-#define MAX_NOTES 10 // Due to problems with lack of RAM (12 for 180MHz, 16 for 216 MHz)
-#endif
-#else
-#if NUM_DEXED == 1
-#define MAX_NOTES 16
-#else
-#if F_CPU >= 216
-#define MAX_NOTES 16
-#else
-#define MAX_NOTES 13
+#if defined(__MK66FX1M0__) // Teensy-3.6
+# if defined(USE_FX)
+#  if NUM_DEXED == 1
+#   if F_CPU == 256000000
+#    define MAX_NOTES 20
+#   elif F_CPU == 216000000
+#    define MAX_NOTES 16
+#   else
+#    define MAX_NOTES 12
+#   endif
+#  else
+#   if F_CPU == 256000000
+#    define MAX_NOTES 9
+#   elif F_CPU == 216000000
+#    define MAX_NOTES 7
+#   else
+#    define MAX_NOTES 5
+#   endif
+#  endif
+# else
+#  if NUM_DEXED == 1
+#   if F_CPU == 256000000
+#    define MAX_NOTES 20
+#   elif F_CPU == 216000000
+#    define MAX_NOTES 20
+#   else
+#    define MAX_NOTES 16
+#   endif
+#  else
+#   if F_CPU == 256000000
+#    define MAX_NOTES 20
+#   elif F_CPU == 216000000
+#    define MAX_NOTES 16
+#   else
+#    define MAX_NOTES 8
+#   endif
+#  endif
+#  define TEENSY3_6
+# endif
 #endif
-#endif // NUM_DEXED == 1
-#endif // defined(USE_FX)
-#define TEENSY3_6
-#endif // defined(__MK66FX1M0__)
 
 #if defined (__MK64FX512__)
 // Teensy-3.5 settings
diff --git a/dexed.cpp b/dexed.cpp
index f6f3bd6..8ab5b85 100644
--- a/dexed.cpp
+++ b/dexed.cpp
@@ -421,6 +421,7 @@ void Dexed::panic(void)
       }
     }
   }
+  setSustain(0);
 }
 
 void Dexed::resetControllers(void)