diff --git a/src/libslic3r/Technologies.hpp b/src/libslic3r/Technologies.hpp
index 0a6f368a13..31862863ed 100644
--- a/src/libslic3r/Technologies.hpp
+++ b/src/libslic3r/Technologies.hpp
@@ -65,6 +65,7 @@
 // requires VGCODE_ENABLE_ET_SPE1872 set to 1 in libvgcode (Types.hpp)
 #define ENABLE_ET_SPE1872 (1 && ENABLE_NEW_GCODE_VIEWER)
 #define ENABLE_ET_SPE1872_FIRMWARE_BUDDY (1 && ENABLE_ET_SPE1872)
+#define ENABLE_ET_SPE1872_DEBUG (1 && ENABLE_ET_SPE1872)
 
 // Enable G-Code viewer statistics imgui dialog
 #define ENABLE_GCODE_VIEWER_STATISTICS (0 && !ENABLE_NEW_GCODE_VIEWER)
diff --git a/src/libvgcode/include/Types.hpp b/src/libvgcode/include/Types.hpp
index e3bff5a273..6fd04e8c5f 100644
--- a/src/libvgcode/include/Types.hpp
+++ b/src/libvgcode/include/Types.hpp
@@ -7,6 +7,7 @@
 
 #define VGCODE_ENABLE_COG_AND_TOOL_MARKERS 0
 #define VGCODE_ENABLE_ET_SPE1872 1
+#define VGCODE_ENABLE_ET_SPE1872_DEBUG (1 && VGCODE_ENABLE_ET_SPE1872)
 
 #include <array>
 #include <vector>
diff --git a/src/libvgcode/include/Viewer.hpp b/src/libvgcode/include/Viewer.hpp
index 761d15dfe7..bcc595d4d4 100644
--- a/src/libvgcode/include/Viewer.hpp
+++ b/src/libvgcode/include/Viewer.hpp
@@ -166,9 +166,15 @@ public:
     // EViewType::Height
     // EViewType::Width
     // EViewType::Speed
+#if VGCODE_ENABLE_ET_SPE1872
+    // EViewType::ActualSpeed
+#endif // VGCODE_ENABLE_ET_SPE1872
     // EViewType::FanSpeed
     // EViewType::Temperature
     // EViewType::VolumetricFlowRate
+#if VGCODE_ENABLE_ET_SPE1872
+    // EViewType::ActualVolumetricFlowRate
+#endif // VGCODE_ENABLE_ET_SPE1872
     // EViewType::LayerTimeLinear
     // EViewType::LayerTimeLogarithmic
     //
@@ -180,9 +186,15 @@ public:
     // EViewType::Height
     // EViewType::Width
     // EViewType::Speed
+#if VGCODE_ENABLE_ET_SPE1872
+    // EViewType::ActualSpeed
+#endif // VGCODE_ENABLE_ET_SPE1872
     // EViewType::FanSpeed
     // EViewType::Temperature
     // EViewType::VolumetricFlowRate
+#if VGCODE_ENABLE_ET_SPE1872
+    // EViewType::ActualVolumetricFlowRate
+#endif // VGCODE_ENABLE_ET_SPE1872
     // EViewType::LayerTimeLinear
     // EViewType::LayerTimeLogarithmic
     //
diff --git a/src/slic3r/GUI/GCodeViewer.cpp b/src/slic3r/GUI/GCodeViewer.cpp
index 090c458184..2e0a88b419 100644
--- a/src/slic3r/GUI/GCodeViewer.cpp
+++ b/src/slic3r/GUI/GCodeViewer.cpp
@@ -531,6 +531,18 @@ void GCodeViewer::SequentialView::Marker::render_position_window(const libvgcode
                         text = _u8L("N/A");
                     imgui.text(text);
                 });
+#if ENABLE_ET_SPE1872
+                append_table_row(_u8L("Actual speed") + " (" + _u8L("mm/s") + ")", [&imgui, &vertex, &buff]() {
+                    std::string text;
+                    if (vertex.is_extrusion()) {
+                        sprintf(buff, "%.1f", vertex.actual_feedrate);
+                        text = std::string(buff);
+                    }
+                    else
+                        text = _u8L("N/A");
+                    imgui.text(text);
+                });
+#endif // ENABLE_ET_SPE1872
                 append_table_row(_u8L("Fan speed") + " (" + _u8L("%") + ")", [&imgui, &vertex, &buff]() {
                     std::string text;
                     if (vertex.is_extrusion()) {
@@ -554,6 +566,36 @@ void GCodeViewer::SequentialView::Marker::render_position_window(const libvgcode
 
                 ImGui::EndTable();
             }
+
+#if ENABLE_ET_SPE1872_DEBUG
+            if (vertex.is_extrusion() || vertex.is_travel() || vertex.is_wipe()) {
+                const std::array<float, 2>& interval = viewer->get_color_range(libvgcode::EViewType::ActualSpeed).get_range();
+                const size_t vertices_count = viewer->get_vertices_count();
+                const libvgcode::PathVertex& curr_vertex = viewer->get_current_vertex();
+                const size_t curr_id = viewer->get_current_vertex_id();
+                size_t start_id = curr_id;
+                while (start_id > 0) {
+                    --start_id;
+                    if (curr_vertex.gcode_id != viewer->get_vertex_at(start_id).gcode_id)
+                        break;
+                }
+                size_t end_id = curr_id;
+                while (end_id < vertices_count - 1) {
+                    ++end_id;
+                    if (curr_vertex.gcode_id != viewer->get_vertex_at(end_id).gcode_id)
+                        break;
+                }
+                std::vector<float> actual_speed_profile;
+                for (size_t i = start_id; i < end_id; ++i) {
+                    actual_speed_profile.push_back(viewer->get_vertex_at(i).actual_feedrate);
+                }
+
+                ImGui::Spacing();
+                imgui.text(_u8L("Actual speed profile"));
+                ImGui::Separator();
+                ImGui::PlotLines("##ActualSpeedProfile", actual_speed_profile.data(), static_cast<int>(actual_speed_profile.size()), 0, nullptr, 0.0f, interval[1], { 0.0f, 150.0f });
+            }
+#endif // ENABLE_ET_SPE1872_DEBUG
         }
 
         // force extra frame to automatically update window size