From 7f913f1cc2eeac032727da42852c493eeb627c33 Mon Sep 17 00:00:00 2001
From: Ioannis Giannakas <59056762+igiannakas@users.noreply.github.com>
Date: Sat, 5 Apr 2025 07:46:02 +0100
Subject: [PATCH] Fix speed up during overhang slowdown when curled perimeters
 is enabled. (#9215)

---
 src/libslic3r/GCode/ExtrusionProcessor.hpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/libslic3r/GCode/ExtrusionProcessor.hpp b/src/libslic3r/GCode/ExtrusionProcessor.hpp
index dd0065247d..62a01db11e 100644
--- a/src/libslic3r/GCode/ExtrusionProcessor.hpp
+++ b/src/libslic3r/GCode/ExtrusionProcessor.hpp
@@ -442,6 +442,10 @@ public:
             };
             
             float extrusion_speed = std::min(calculate_speed(curr.distance), calculate_speed(next.distance));
+            // ORCA: Clamp resulting speed to lowest of calculated speed based on the overhang values and the current speed
+            // Fixes bug where resulting overhang speed is higher than the current speed due to (for example) volumetric flow limits.
+            extrusion_speed = std::min(extrusion_speed, original_speed);
+            
             if(slowdown_for_curled_edges) {
                 float curled_speed = calculate_speed(artificial_distance_to_curled_lines);
             	extrusion_speed       = std::min(curled_speed, extrusion_speed); // adjust extrusion speed based on what is smallest - the calculated overhang speed or the artificial curled speed