make sure u8g2 uses 16bit

src/screen.cpp

@@ -290,10 +290,11 @@ void MainScreen::draw() {
 
 								// repeated drawing of the scrolling text...
 
-      titleStr_offset-=4;							// scroll by one pixel
+      titleStr_offset-=2;							// scroll by one pixel
       if ( (u8g2_uint_t)titleStr_offset < (u8g2_uint_t)-width )
         titleStr_offset = 0; // start over again
-      } else {
+
+      } else { // don't scroll
         u8g2.drawUTF8((u8g2.getDisplayWidth()-width)/2, 54, titleStr);
       }
       uint32_t buffFill = mp3.getBuffFill();

src/screen.h

@@ -15,6 +15,7 @@
 #ifdef U8X8_HAVE_HW_I2C
 #include <Wire.h>
 #endif
+#define U8G2_16BIT
 
 #include "main.h"
 #include "mp3.h"