Placed optional ENCODER_PULSES_PER_STEP in the configuration.h file

Marlin/Configuration.h

@@ -359,7 +359,7 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
 //#define DOGLCD  // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family)
 //#define SDSUPPORT // Enable SD Card Support in Hardware Console
 //#define SDSLOW // Use slower SD transfer mode (not normally needed - uncomment if you're getting volume init error)
-
+//#define ENCODER_PULSES_PER_STEP 1 // Increase if you have a high resolution encoder
 //#define ULTIMAKERCONTROLLER //as available from the ultimaker online store.
 //#define ULTIPANEL  //the ultipanel as on thingiverse
 

Marlin/ultralcd.cpp

@@ -88,10 +88,14 @@ static void menu_action_setting_edit_callback_long5(const char* pstr, unsigned l
 
 #if !defined(LCD_I2C_VIKI)
   #define ENCODER_STEPS_PER_MENU_ITEM 5
-  #define ENCODER_PULSES_PER_STEP 1
+  #ifndef ENCODER_PULSES_PER_STEP
+    #define ENCODER_PULSES_PER_STEP 1
+  #endif
 #else
   #define ENCODER_STEPS_PER_MENU_ITEM 2 // VIKI LCD rotary encoder uses a different number of steps per rotation
-  #define ENCODER_PULSES_PER_STEP 1
+  #ifndef ENCODER_PULSES_PER_STEP
+    #define ENCODER_PULSES_PER_STEP 1
+  #endif
 #endif