diff --git a/UI.hpp b/UI.hpp
index 6121fc7..61b659d 100644
--- a/UI.hpp
+++ b/UI.hpp
@@ -6778,7 +6778,10 @@ void display_bar_float(const char* title, float value, float factor, int32_t min
 
   // Value
   display.setCursor(LCD_cols - size, 1);
-  display_float(value * factor, size_number, size_fraction, zeros, false, sign); // TBD
+  //display_float(value * factor, size_number, size_fraction, zeros, false, sign); // does not work with "Smallest code" optimizer
+  char s[LCD_cols + 1];
+  snprintf_P(s, strlen(s), PSTR("%+1.1f"), value * factor); // not so good solution, but works with optimizer
+  display.print(s);
 
   // Bar
   display.setCursor(0, 1);
@@ -6833,7 +6836,10 @@ void display_meter_float(const char* title, float value, float factor, float off
 
   // Value
   display.setCursor(LCD_cols - size, 1);
-  display_float((value + offset) * factor, size_number, size_fraction, zeros, false, sign);
+  //display_float((value + offset) * factor, size_number, size_fraction, zeros, false, sign); // does not work with "Smallest code" optimizer
+  char s[LCD_cols + 1];
+  snprintf_P(s, strlen(s), PSTR("%+1.1f"), (value + offset) * factor); // not so good solution, but works with optimizer
+  display.print(s);
 
   // Bar
   display.setCursor(0, 1);
diff --git a/config.h b/config.h
index e7fb539..b69a2d0 100644
--- a/config.h
+++ b/config.h
@@ -53,6 +53,8 @@
 // sed -i.orig 's/^#define USB_MIDI_SYSEX_MAX 290/#define USB_MIDI_SYSEX_MAX 4104/' /usr/local/arduino-teensy/hardware/teensy/avr/cores/teensy3/usb_midi.h
 // sed -i.orig 's/^#define USB_MIDI_SYSEX_MAX 290/#define USB_MIDI_SYSEX_MAX 4104/' /usr/local/arduino-teensy/hardware/teensy/avr/cores/teensy4/usb_midi.h
 //#define USB_MIDI_SYSEX_MAX 4104
+//
+// Information about memory layout, etc.: https://www.pjrc.com/store/teensy41.html
 
 #define VERSION "1.2.3"
 
diff --git a/third-party/TeensyVariablePlayback/src/playresmp.h b/third-party/TeensyVariablePlayback/src/playresmp.h
index fd2f617..984c5c8 100644
--- a/third-party/TeensyVariablePlayback/src/playresmp.h
+++ b/third-party/TeensyVariablePlayback/src/playresmp.h
@@ -8,90 +8,90 @@
 template <class TResamplingReader>
 class AudioPlayResmp : public AudioStream
 {
-public:
-AudioPlayResmp(): AudioStream(0, NULL), reader(nullptr)
-{
-}
+    public:
+        AudioPlayResmp(): AudioStream(0, NULL), reader(nullptr)
+        {
+        }
 
-virtual ~AudioPlayResmp() {
-}
+        virtual ~AudioPlayResmp() {
+        }
 
-void begin(void)
-{
-    reader->begin();
-}
+        void begin(void)
+        {
+            reader->begin();
+        }
 
-bool playRaw(const char *filename, uint16_t numChannels)
-{
-    stop();
-    return reader->play(filename, false, numChannels);
-}
+        bool playRaw(const char *filename, uint16_t numChannels)
+        {
+            stop();
+            return reader->play(filename, false, numChannels);
+        }
 
-bool playWav(const char *filename)
-{
-    stop();
-    return reader->play(filename, true, 0);
-}
+        bool playWav(const char *filename)
+        {
+            stop();
+            return reader->play(filename, true, 0);
+        }
+        
+        bool playRaw(int16_t *data, uint32_t numSamples, uint16_t numChannels)
+        {
+            stop();
+            return reader->playRaw(data, numSamples, numChannels);
+        }
 
-bool playRaw(int16_t *data, uint32_t numSamples, uint16_t numChannels)
-{
-    stop();
-    return reader->playRaw(data, numSamples, numChannels);
-}
+        bool playRaw(const unsigned int *data, uint32_t numSamples, uint16_t numChannels) 
+        {
+            return playRaw((int16_t *) data, numSamples, numChannels);
+        }
 
-bool playRaw(const unsigned int *data, uint32_t numSamples, uint16_t numChannels) 
-{
-    return playRaw((int16_t *) data, numSamples, numChannels);
-}
+        bool playWav(int16_t *data, uint32_t fileSize)
+        {
+            stop();
+            return reader->playWav(data, fileSize);
+        }
 
-bool playWav(int16_t *data, uint32_t fileSize)
-{
-    stop();
-    return reader->playWav(data, fileSize);
-}
-
-bool playWav(const unsigned int *data, uint32_t fileSize) {
-    return playWav((int16_t *) data, fileSize);
-}
-
-void setPlaybackRate(float f) {
-    reader->setPlaybackRate(f);
-}
-
-void setLoopType(loop_type t) {
-    reader->setLoopType(t);
-}
-
-void setLoopStart(uint32_t loop_start) {
-    reader->setLoopStart(loop_start);
-}
-
-void setLoopFinish(uint32_t loop_finish) {
-    reader->setLoopFinish(loop_finish);
-}
-
-void enableInterpolation(bool enable) {
-    if (enable)
-	reader->setInterpolationType(ResampleInterpolationType::resampleinterpolation_quadratic);
-    else 
-	reader->setInterpolationType(ResampleInterpolationType::resampleinterpolation_none);
-}
-
-bool isPlaying(void) {
-    return reader->isPlaying();
-};
+        bool playWav(const unsigned int *data, uint32_t fileSize) {
+            return playWav((int16_t *) data, fileSize);
+        }
 
-void stop() {
-    reader->stop();
-}
+        void setPlaybackRate(float f) {
+            reader->setPlaybackRate(f);
+        }
 
-void update()
-{
-    int _numChannels = reader->getNumChannels();
-    if (_numChannels == -1)
-	return;
+        void setLoopType(loop_type t) {
+            reader->setLoopType(t);
+        }
+
+        void setLoopStart(uint32_t loop_start) {
+            reader->setLoopStart(loop_start);
+        }
+
+        void setLoopFinish(uint32_t loop_finish) {
+            reader->setLoopFinish(loop_finish);
+        }
+
+        void enableInterpolation(bool enable) {
+            if (enable)
+                reader->setInterpolationType(ResampleInterpolationType::resampleinterpolation_quadratic);
+            else 
+                reader->setInterpolationType(ResampleInterpolationType::resampleinterpolation_none);
+        }
+
+        bool isPlaying(void) {
+            return reader->isPlaying();
+        };
+
+        void stop() {
+            reader->stop();
+        }
+
+        void update()
+        {
+            int _numChannels = reader->getNumChannels();
+            if (_numChannels == -1)
+                return;
 
-    unsigned int n;
+            unsigned int n;
             audio_block_t *blocks[_numChannels];
             int16_t *data[_numChannels];
             // only update if we're playing