diff --git a/xs/src/libslic3r/PrintConfig.hpp b/xs/src/libslic3r/PrintConfig.hpp
index 4a9ea7844d..6a877cf8ca 100644
--- a/xs/src/libslic3r/PrintConfig.hpp
+++ b/xs/src/libslic3r/PrintConfig.hpp
@@ -248,38 +248,38 @@ class PrintRegionConfig : public virtual StaticPrintConfig
         this->external_fill_pattern.value                        = ipRectilinear;
         this->external_perimeter_extrusion_width.value           = 0;
         this->external_perimeter_extrusion_width.percent         = false;
-        this->external_perimeter_speed.value                     = 70;
+        this->external_perimeter_speed.value                     = 50;
         this->external_perimeter_speed.percent                   = true;
         this->external_perimeters_first.value                    = false;
         this->extra_perimeters.value                             = true;
         this->fill_angle.value                                   = 45;
-        this->fill_density.value                                 = 40;
+        this->fill_density.value                                 = 20;
         this->fill_pattern.value                                 = ipHoneycomb;
         this->gap_fill_speed.value                               = 20;
         this->infill_extruder.value                              = 1;
         this->infill_extrusion_width.value                       = 0;
         this->infill_extrusion_width.percent                     = false;
         this->infill_every_layers.value                          = 1;
-        this->infill_speed.value                                 = 60;
+        this->infill_speed.value                                 = 80;
         this->overhangs.value                                    = true;
         this->perimeter_extruder.value                           = 1;
         this->perimeter_extrusion_width.value                    = 0;
         this->perimeter_extrusion_width.percent                  = false;
-        this->perimeter_speed.value                              = 30;
+        this->perimeter_speed.value                              = 60;
         this->perimeters.value                                   = 3;
         this->solid_infill_extruder.value                        = 1;
-        this->small_perimeter_speed.value                        = 30;
+        this->small_perimeter_speed.value                        = 15;
         this->small_perimeter_speed.percent                      = false;
         this->solid_infill_below_area.value                      = 70;
         this->solid_infill_extrusion_width.value                 = 0;
         this->solid_infill_extrusion_width.percent               = false;
         this->solid_infill_every_layers.value                    = 0;
-        this->solid_infill_speed.value                           = 60;
+        this->solid_infill_speed.value                           = 0;
         this->solid_infill_speed.percent                         = false;
         this->thin_walls.value                                   = true;
         this->top_infill_extrusion_width.value                   = 0;
         this->top_infill_extrusion_width.percent                 = false;
-        this->top_solid_infill_speed.value                       = 50;
+        this->top_solid_infill_speed.value                       = 15;
         this->top_solid_infill_speed.percent                     = false;
         this->top_solid_layers.value                             = 3;
     };
@@ -359,7 +359,7 @@ class GCodeConfig : public virtual StaticPrintConfig
         this->layer_gcode.value                                  = "";
         this->pressure_advance.value                             = 0;
         this->retract_length.values.resize(1);
-        this->retract_length.values[0]                           = 1;
+        this->retract_length.values[0]                           = 2;
         this->retract_length_toolchange.values.resize(1);
         this->retract_length_toolchange.values[0]                = 10;
         this->retract_lift.values.resize(1);
@@ -369,7 +369,7 @@ class GCodeConfig : public virtual StaticPrintConfig
         this->retract_restart_extra_toolchange.values.resize(1);
         this->retract_restart_extra_toolchange.values[0]         = 0;
         this->retract_speed.values.resize(1);
-        this->retract_speed.values[0]                            = 30;
+        this->retract_speed.values[0]                            = 40;
         this->start_gcode.value                                  = "G28 ; home all axes\nG1 Z5 F5000 ; lift nozzle\n";
         this->toolchange_gcode.value                             = "";
         this->travel_speed.value                                 = 130;
@@ -482,7 +482,7 @@ class PrintConfig : public GCodeConfig
         this->complete_objects.value                             = false;
         this->cooling.value                                      = true;
         this->default_acceleration.value                         = 0;
-        this->disable_fan_first_layers.value                     = 1;
+        this->disable_fan_first_layers.value                     = 3;
         this->duplicate_distance.value                           = 6;
         this->extruder_clearance_height.value                    = 20;
         this->extruder_clearance_radius.value                    = 20;
@@ -495,7 +495,7 @@ class PrintConfig : public GCodeConfig
         this->first_layer_extrusion_width.value                  = 200;
         this->first_layer_extrusion_width.percent                = true;
         this->first_layer_speed.value                            = 30;
-        this->first_layer_speed.percent                          = true;
+        this->first_layer_speed.percent                          = false;
         this->first_layer_temperature.values.resize(1);
         this->first_layer_temperature.values[0]                  = 200;
         this->gcode_arcs.value                                   = false;
@@ -516,11 +516,11 @@ class PrintConfig : public GCodeConfig
         this->retract_before_travel.values.resize(1);
         this->retract_before_travel.values[0]                    = 2;
         this->retract_layer_change.values.resize(1);
-        this->retract_layer_change.values[0]                     = true;
+        this->retract_layer_change.values[0]                     = false;
         this->skirt_distance.value                               = 6;
         this->skirt_height.value                                 = 1;
         this->skirts.value                                       = 1;
-        this->slowdown_below_layer_time.value                    = 30;
+        this->slowdown_below_layer_time.value                    = 5;
         this->spiral_vase.value                                  = false;
         this->standby_temperature_delta.value                    = -5;
         this->temperature.values.resize(1);