diff --git a/Firmware/Configuration.h b/Firmware/Configuration.h
index 81c8a602..7db9a539 100644
--- a/Firmware/Configuration.h
+++ b/Firmware/Configuration.h
@@ -8,7 +8,7 @@
 
 // Firmware version
 #define FW_VERSION "3.1.1-RC5"
-#define FW_COMMIT_NR   150
+#define FW_COMMIT_NR   151
 // FW_VERSION_UNKNOWN means this is an unofficial build.
 // The firmware should only be checked into github with this symbol.
 #define FW_DEV_VERSION FW_VERSION_UNKNOWN
diff --git a/Firmware/Configuration_prusa.h b/Firmware/Configuration_prusa.h
index 5f9455b6..cd5ddcbc 100644
--- a/Firmware/Configuration_prusa.h
+++ b/Firmware/Configuration_prusa.h
@@ -32,8 +32,8 @@
 
 // Steps per unit {X,Y,Z,E}
 //#define DEFAULT_AXIS_STEPS_PER_UNIT   {100,100,3200/8,140}
-//#define DEFAULT_AXIS_STEPS_PER_UNIT   {100,100,3200/8,280}
-#define DEFAULT_AXIS_STEPS_PER_UNIT   {100,100,3200/8,560}
+#define DEFAULT_AXIS_STEPS_PER_UNIT   {100,100,3200/8,280}
+//#define DEFAULT_AXIS_STEPS_PER_UNIT   {100,100,3200/8,560}
 
 // Endstop inverting
 const bool X_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.
@@ -144,7 +144,7 @@ const bool Z_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic o
 
 #define TMC2130_USTEPS_XY   16        // microstep resolution for XY axes
 #define TMC2130_USTEPS_Z    16        // microstep resolution for Z axis
-#define TMC2130_USTEPS_E    64        // microstep resolution for E axis
+#define TMC2130_USTEPS_E    32        // microstep resolution for E axis
 #define TMC2130_INTPOL_XY   1         // extrapolate 256 for XY axes
 #define TMC2130_INTPOL_Z    1         // extrapolate 256 for Z axis
 #define TMC2130_INTPOL_E    1         // extrapolate 256 for E axis
diff --git a/Firmware/fsensor.cpp b/Firmware/fsensor.cpp
index 1610e9af..2b53b710 100644
--- a/Firmware/fsensor.cpp
+++ b/Firmware/fsensor.cpp
@@ -14,7 +14,7 @@
 #define FSENSOR_ERR_MAX          5  //filament sensor max error count
 #define FSENSOR_INT_PIN         63  //filament sensor interrupt pin PK1
 #define FSENSOR_INT_PIN_MSK   0x02  //filament sensor interrupt pin mask (bit1)
-#define FSENSOR_CHUNK_LEN      560  //filament sensor chunk length in steps
+#define FSENSOR_CHUNK_LEN      280  //filament sensor chunk length in steps
 
 extern void stop_and_save_print_to_ram(float z_move, float e_move);
 extern void restore_print_from_ram_and_continue(float e_move);