diff --git a/src/libslic3r/GCode/SeamPlacer.cpp b/src/libslic3r/GCode/SeamPlacer.cpp
index 89c47fbb2..1028feea8 100644
--- a/src/libslic3r/GCode/SeamPlacer.cpp
+++ b/src/libslic3r/GCode/SeamPlacer.cpp
@@ -663,8 +663,8 @@ void compute_global_occlusion(GlobalModelInfo &result, const PrintObject *po,
 
     BOOST_LOG_TRIVIAL(debug)
     << "SeamPlacer: decimate: start";
-    its_short_edge_collpase(triangle_set, 25000);
-    its_short_edge_collpase(negative_volumes_set, 25000);
+    its_short_edge_collpase(triangle_set, SeamPlacer::fast_decimation_triangle_count_target);
+    its_short_edge_collpase(negative_volumes_set, SeamPlacer::fast_decimation_triangle_count_target);
 
     size_t negative_volumes_start_index = triangle_set.indices.size();
     its_merge(triangle_set, negative_volumes_set);
diff --git a/src/libslic3r/GCode/SeamPlacer.hpp b/src/libslic3r/GCode/SeamPlacer.hpp
index 696bbdf61..2e5996905 100644
--- a/src/libslic3r/GCode/SeamPlacer.hpp
+++ b/src/libslic3r/GCode/SeamPlacer.hpp
@@ -123,6 +123,7 @@ class SeamPlacer {
 public:
     // Number of samples generated on the mesh. There are sqr_rays_per_sample_point*sqr_rays_per_sample_point rays casted from each samples
     static constexpr size_t raycasting_visibility_samples_count = 30000;
+    static constexpr size_t fast_decimation_triangle_count_target = 16000;
     //square of number of rays per sample point
     static constexpr size_t sqr_rays_per_sample_point = 5;
 
diff --git a/src/libslic3r/ShortEdgeCollapse.cpp b/src/libslic3r/ShortEdgeCollapse.cpp
index b36278c37..0c940cb47 100644
--- a/src/libslic3r/ShortEdgeCollapse.cpp
+++ b/src/libslic3r/ShortEdgeCollapse.cpp
@@ -97,7 +97,8 @@ void its_short_edge_collpase(indexed_triangle_set &mesh, size_t target_triangle_
 
         //shuffle the faces and traverse in random order, this MASSIVELY improves the quality of the result
         std::shuffle(face_indices.begin(), face_indices.end(), generator);
-
+        
+        int allowed_face_removals = int(face_indices.size()) - int(target_triangle_count);
         for (const size_t &face_idx : face_indices) {
             if (face_removal_flags[face_idx]) {
                 // if face already removed from previous collapses, skip (each collapse removes two triangles [at least] )
@@ -130,10 +131,13 @@ void its_short_edge_collpase(indexed_triangle_set &mesh, size_t target_triangle_
                 // remove faces
                 remove_face(face_idx, neighbor_to_remove_face_idx);
                 remove_face(neighbor_to_remove_face_idx, face_idx);
+                allowed_face_removals-=2;
 
                 // break. this triangle is done
                 break;
             }
+
+            if (allowed_face_removals <= 0) { break; }
         }
 
         // filter face_indices, remove those that have been collapsed