diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index ce788d582d5..7a75f873b23 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -4044,7 +4044,10 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
                 double new_speed = m_config.get_abs_value(overhang_speed_key_map[overhang_degree].c_str());
                 speed = new_speed == 0.0 ? speed : new_speed;
             }
-        } else if (path.role() == erOverhangPerimeter || path.role() == erBridgeInfill || path.role() == erSupportTransition) {
+        } 
+        else if(path.role() == erBridgeInfill) {
+            speed = m_config.get_abs_value("internal_bridge_speed");
+        } else if (path.role() == erOverhangPerimeter || path.role() == erSupportTransition) {
             speed = m_config.get_abs_value("bridge_speed");
         } else if (path.role() == erInternalInfill) {
             speed = m_config.get_abs_value("sparse_infill_speed");
diff --git a/src/libslic3r/Preset.cpp b/src/libslic3r/Preset.cpp
index 24a8b1eaa1d..72ccd450dad 100644
--- a/src/libslic3r/Preset.cpp
+++ b/src/libslic3r/Preset.cpp
@@ -750,12 +750,11 @@ static std::vector<std::string> s_Preset_print_options {
 #endif /* HAS_PRESSURE_EQUALIZER */
     "inner_wall_speed", "outer_wall_speed", "sparse_infill_speed", "internal_solid_infill_speed",
     "top_surface_speed", "support_speed", "support_object_xy_distance", "support_interface_speed",
-    "bridge_speed", "gap_infill_speed", "travel_speed", "travel_speed_z", "initial_layer_speed",
+    "bridge_speed", "internal_bridge_speed", "gap_infill_speed", "travel_speed", "travel_speed_z", "initial_layer_speed",
     "outer_wall_acceleration", "initial_layer_acceleration", "top_surface_acceleration", "default_acceleration", "skirt_loops", "skirt_speed", "skirt_distance", "skirt_height", "draft_shield",
     "brim_width", "brim_object_gap", "brim_type", "enable_support", "support_type", "support_threshold_angle", "enforce_support_layers",
     "raft_layers", "raft_first_layer_density", "raft_first_layer_expansion", "raft_contact_distance", "raft_expansion",
     "support_base_pattern", "support_base_pattern_spacing", "support_expansion", "support_style",
-    // BBS
     "independent_support_layer_height",
     "support_angle", "support_interface_top_layers", "support_interface_bottom_layers",
     "support_interface_pattern", "support_interface_spacing", "support_interface_loop_pattern",
@@ -769,7 +768,6 @@ static std::vector<std::string> s_Preset_print_options {
     "prime_tower_width", "prime_tower_brim_width", "prime_volume",
     "wipe_tower_no_sparse_layers", "compatible_printers", "compatible_printers_condition", "inherits",
     "flush_into_infill", "flush_into_objects", "flush_into_support",
-    // BBS
      "tree_support_branch_angle", "tree_support_wall_count", "tree_support_branch_distance",
      "tree_support_branch_diameter",
      "detect_narrow_internal_solid_infill",
@@ -779,7 +777,6 @@ static std::vector<std::string> s_Preset_print_options {
      "timelapse_type", "internal_bridge_support_thickness",
      "wall_generator", "wall_transition_length", "wall_transition_filter_deviation", "wall_transition_angle",
      "wall_distribution_count", "min_feature_size", "min_bead_width", "post_process",
-     // SoftFever
      "small_perimeter_speed", "small_perimeter_threshold","bridge_angle", "filter_out_gap_fill", "travel_acceleration","inner_wall_acceleration", "min_width_top_surface",
      "default_jerk", "outer_wall_jerk", "inner_wall_jerk", "infill_jerk", "top_surface_jerk", "initial_layer_jerk","travel_jerk",
      "top_solid_infill_flow_ratio","bottom_solid_infill_flow_ratio","only_one_wall_first_layer", "print_flow_ratio", "seam_gap",
diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index 8cecfa0b78a..6dcef0c91ce 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -831,7 +831,7 @@ void PrintConfigDef::init_fff_params()
     def->set_default_value(new ConfigOptionFloatOrPercent(0, false));
 
     def = this->add("bridge_speed", coFloat);
-    def->label = L("Bridge");
+    def->label = L("External");
     def->category = L("Speed");
     def->tooltip = L("Speed of bridge and completely overhang wall");
     def->sidetext = L("mm/s");
@@ -839,6 +839,16 @@ void PrintConfigDef::init_fff_params()
     def->mode = comAdvanced;
     def->set_default_value(new ConfigOptionFloat(25));
 
+    def = this->add("internal_bridge_speed", coFloatOrPercent);
+    def->label = L("Internal");
+    def->category = L("Speed");
+    def->tooltip = L("Speed of internal bridge. If the value is expressed as a percentage, it will be calculated based on the bridge_speed. Default value is 150%.");
+    def->sidetext = L("mm/s or %");
+    def->ratio_over = "bridge_speed";
+    def->min = 0;
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionFloatOrPercent(150, true));
+
     def = this->add("brim_width", coFloat);
     def->label = L("Brim width");
     def->category = L("Support");
diff --git a/src/libslic3r/PrintConfig.hpp b/src/libslic3r/PrintConfig.hpp
index ac415a38cfb..7a343e8ab9a 100644
--- a/src/libslic3r/PrintConfig.hpp
+++ b/src/libslic3r/PrintConfig.hpp
@@ -729,6 +729,7 @@ PRINT_CONFIG_CLASS_DEFINE(
     ((ConfigOptionFloat,                bridge_angle))
     ((ConfigOptionFloat,                bridge_flow))
     ((ConfigOptionFloat,                bridge_speed))
+    ((ConfigOptionFloatOrPercent,       internal_bridge_speed))
     ((ConfigOptionBool,                 ensure_vertical_shell_thickness))
     ((ConfigOptionEnum<InfillPattern>,  top_surface_pattern))
     ((ConfigOptionEnum<InfillPattern>,  bottom_surface_pattern))
diff --git a/src/libslic3r/PrintObject.cpp b/src/libslic3r/PrintObject.cpp
index caa0243c890..0e4facc9d7b 100644
--- a/src/libslic3r/PrintObject.cpp
+++ b/src/libslic3r/PrintObject.cpp
@@ -927,6 +927,7 @@ bool PrintObject::invalidate_state_by_config_options(
             || opt_key == "overhang_3_4_speed"
             || opt_key == "overhang_4_4_speed"
             || opt_key == "bridge_speed"
+            || opt_key == "internal_bridge_speed"
             || opt_key == "outer_wall_speed"
             || opt_key == "small_perimeter_speed"
             || opt_key == "small_perimeter_threshold"
diff --git a/src/slic3r/GUI/ConfigManipulation.cpp b/src/slic3r/GUI/ConfigManipulation.cpp
index 89a25c5c775..fdc62ec532a 100644
--- a/src/slic3r/GUI/ConfigManipulation.cpp
+++ b/src/slic3r/GUI/ConfigManipulation.cpp
@@ -563,7 +563,7 @@ void ConfigManipulation::toggle_print_fff_options(DynamicPrintConfig *config, co
         toggle_field(el, has_solid_infill);
 
     for (auto el : { "infill_direction", "sparse_infill_line_width",
-                    "sparse_infill_speed", "bridge_speed", "bridge_angle" })
+                    "sparse_infill_speed", "bridge_speed", "internal_bridge_speed", "bridge_angle" })
         toggle_field(el, have_infill || has_solid_infill);
 
     toggle_field("top_shell_thickness", ! has_spiral_vase && has_top_solid_infill);
diff --git a/src/slic3r/GUI/GUI_Factories.cpp b/src/slic3r/GUI/GUI_Factories.cpp
index 23f6f75a30d..8637e764b36 100644
--- a/src/slic3r/GUI/GUI_Factories.cpp
+++ b/src/slic3r/GUI/GUI_Factories.cpp
@@ -101,7 +101,7 @@ std::map<std::string, std::vector<SimpleSettingData>>  SettingsFactory::PART_CAT
                     }},
     { L("Speed"), {{"outer_wall_speed", "",1},{"inner_wall_speed", "",2},{"sparse_infill_speed", "",3},{"top_surface_speed", "",4}, {"internal_solid_infill_speed", "",5},
                     {"enable_overhang_speed", "",6}, {"overhang_speed_classic", "",6}, {"overhang_1_4_speed", "",7}, {"overhang_2_4_speed", "",8}, {"overhang_3_4_speed", "",9}, {"overhang_4_4_speed", "",10},
-                    {"bridge_speed", "",11}, {"gap_infill_speed", "",12}
+                    {"bridge_speed", "",11}, {"gap_infill_speed", "",12}, {"internal_bridge_speed", "", 13}
                     }}
 };
 
diff --git a/src/slic3r/GUI/OG_CustomCtrl.cpp b/src/slic3r/GUI/OG_CustomCtrl.cpp
index 9fc2436f017..0ddaafa2e4a 100644
--- a/src/slic3r/GUI/OG_CustomCtrl.cpp
+++ b/src/slic3r/GUI/OG_CustomCtrl.cpp
@@ -75,7 +75,7 @@ void OG_CustomCtrl::init_ctrl_lines()
     for (const Line& line : og_lines)
     {
         if (line.is_separator()) {
-            ctrl_lines.emplace_back(CtrlLine(0, this, line));
+            ctrl_lines.emplace_back(CtrlLine(3, this, line));
             continue;
         }
 
@@ -728,9 +728,9 @@ void OG_CustomCtrl::CtrlLine::render_separator(wxDC& dc, wxCoord v_pos)
     wxPoint begin(ctrl->m_h_gap, v_pos);
     wxPoint end(ctrl->GetSize().GetWidth() - ctrl->m_h_gap, v_pos);
 
-    wxPen pen, old_pen = pen = dc.GetPen();
-    pen.SetColour(*wxLIGHT_GREY);
-    dc.SetPen(pen);
+    wxPen old_pen = dc.GetPen();
+    // pen.SetColour(*wxLIGHT_GREY);
+    dc.SetPen(*wxTRANSPARENT_PEN);
     dc.DrawLine(begin, end);
     dc.SetPen(old_pen);
 }
diff --git a/src/slic3r/GUI/OptionsGroup.cpp b/src/slic3r/GUI/OptionsGroup.cpp
index 145ebb85e96..19f20cf1b34 100644
--- a/src/slic3r/GUI/OptionsGroup.cpp
+++ b/src/slic3r/GUI/OptionsGroup.cpp
@@ -212,10 +212,12 @@ void OptionsGroup::append_line(const Line& line)
 //BBS: get line for opt_key
 Line* OptionsGroup::get_line(const std::string& opt_key)
 {
-    for (int index = 0; index < m_lines.size(); index++)
+    for (auto& l : m_lines)
     {
-        if (m_lines[index].get_first_option_key() == opt_key)
-            return &(m_lines[index]);
+        if(l.is_separator())
+            continue;
+        if (l.get_first_option_key() == opt_key)
+            return &l;
     }
 
     return nullptr;
diff --git a/src/slic3r/GUI/OptionsGroup.hpp b/src/slic3r/GUI/OptionsGroup.hpp
index a758f1652a6..f23f7298099 100644
--- a/src/slic3r/GUI/OptionsGroup.hpp
+++ b/src/slic3r/GUI/OptionsGroup.hpp
@@ -69,6 +69,8 @@ class Line {
     wxWindow*	extra_widget_win {nullptr};
     //BBS: add api to get the first option's key
     std::string& get_first_option_key() {
+		if(m_options.empty())
+			return std::string();
         return m_options[0].opt_id;
     }
 
diff --git a/src/slic3r/GUI/Tab.cpp b/src/slic3r/GUI/Tab.cpp
index 1c34edb2711..01dea10ce8c 100644
--- a/src/slic3r/GUI/Tab.cpp
+++ b/src/slic3r/GUI/Tab.cpp
@@ -1954,7 +1954,11 @@ void TabPrint::build()
         line.append_option(optgroup->get_option("overhang_3_4_speed"));
         line.append_option(optgroup->get_option("overhang_4_4_speed"));
         optgroup->append_line(line);
-        optgroup->append_single_option_line("bridge_speed");
+        optgroup->append_separator();
+        line = { L("Bridge"), L("Set speed for external and internal bridges") };
+        line.append_option(optgroup->get_option("bridge_speed"));
+        line.append_option(optgroup->get_option("internal_bridge_speed"));
+        optgroup->append_line(line);
 
         optgroup = page->new_optgroup(L("Travel speed"), L"param_travel_speed", 15);
         optgroup->append_single_option_line("travel_speed");
@@ -2677,9 +2681,8 @@ void TabFilament::build()
         optgroup->append_single_option_line("bed_temperature_difference");
 
         optgroup = page->new_optgroup(L("Print temperature"), L"param_temperature");
-        optgroup->split_multi_line = true;
-        optgroup->option_label_at_right = true;
         optgroup->append_single_option_line("chamber_temperature");
+        optgroup->append_separator();
 
 
         line = { L("Nozzle"), L("Nozzle temperature when printing") };