diff --git a/src/libslic3r/Print.cpp b/src/libslic3r/Print.cpp
index a35bd2c45c..34338f08dc 100644
--- a/src/libslic3r/Print.cpp
+++ b/src/libslic3r/Print.cpp
@@ -3676,6 +3676,8 @@ int Print::get_filament_config_indx(int filament_id, int layer_id)
 
 void Print::update_filament_self_index_cache()
 {
+    m_missing_nozzle_group_logged.clear();   // reset the per-slice get_config_index log dedupe
+
     std::vector<int> values;
     if (m_full_print_config.has("filament_self_index")) {
         values = m_full_print_config.option<ConfigOptionInts>("filament_self_index")->values;
@@ -3721,9 +3723,12 @@ int Print::get_config_index(int filament_id, int layer_id, const std::vector<std
         return filament_id;
     auto nozzle_info  = group_result->get_nozzle_for_filament(filament_id, layer_id);
     if (!nozzle_info.has_value()) {
-        BOOST_LOG_TRIVIAL(error) << __FUNCTION__
-                                 << boost::format(", Line %1%: could not found group_nozzle_info corresponding to filament_id %2%, layer_id %3%") % __LINE__ % filament_id %
-                                        layer_id;
+        // Orca: this fallback runs per-filament/per-layer in the g-code hot path — log once per filament
+        // (reset each slice) instead of flooding thousands of identical lines that bury the real error.
+        if (m_missing_nozzle_group_logged.insert(filament_id).second)
+            BOOST_LOG_TRIVIAL(error) << __FUNCTION__
+                                     << boost::format(", Line %1%: could not found group_nozzle_info corresponding to filament_id %2%, layer_id %3% (further occurrences for this filament suppressed)") % __LINE__ % filament_id %
+                                            layer_id;
         return 0;
     }
 
@@ -3750,9 +3755,12 @@ int Print::get_config_index(int filament_id, int layer_id, const std::vector<std
         return (int)get_extruder_id(filament_id);
     auto nozzle_info  = group_result->get_nozzle_for_filament(filament_id, layer_id);
     if (!nozzle_info.has_value()) {
-        BOOST_LOG_TRIVIAL(error) << __FUNCTION__
-                                 << boost::format(", Line %1%: could not found group_nozzle_info corresponding to filament_id %2%, layer_id %3%") % __LINE__ % filament_id %
-                                        layer_id;
+        // Orca: this fallback runs per-filament/per-layer in the g-code hot path — log once per filament
+        // (reset each slice) instead of flooding thousands of identical lines that bury the real error.
+        if (m_missing_nozzle_group_logged.insert(filament_id).second)
+            BOOST_LOG_TRIVIAL(error) << __FUNCTION__
+                                     << boost::format(", Line %1%: could not found group_nozzle_info corresponding to filament_id %2%, layer_id %3% (further occurrences for this filament suppressed)") % __LINE__ % filament_id %
+                                            layer_id;
         return 0;
     }
 
diff --git a/src/libslic3r/Print.hpp b/src/libslic3r/Print.hpp
index bd5c25f478..0d87a46b68 100644
--- a/src/libslic3r/Print.hpp
+++ b/src/libslic3r/Print.hpp
@@ -1302,6 +1302,10 @@ private:
     FilamentIndexMap m_filament_index_map;
     // Used to cache printer and process parameter information
     PrintIndexMap m_nozzle_index_map;
+    // Orca: filament ids already reported as missing a nozzle-group entry this slice. get_config_index()
+    // falls back per-filament/per-layer in the g-code hot path, so this dedupes its log to once per
+    // filament instead of flooding thousands of identical error lines. Cleared with the caches each slice.
+    std::set<int> m_missing_nozzle_group_logged;
     // save the config value of "filament_self_index"
     std::vector<int> m_filament_self_index;
 
diff --git a/src/libslic3r/Support/SupportSpotsGenerator.hpp b/src/libslic3r/Support/SupportSpotsGenerator.hpp
index 22e85c021e..615158dabb 100644
--- a/src/libslic3r/Support/SupportSpotsGenerator.hpp
+++ b/src/libslic3r/Support/SupportSpotsGenerator.hpp
@@ -22,7 +22,7 @@ struct Params
         : /*max_acceleration(max_acceleration), */raft_layers_count(raft_layers_count), brim_type(brim_type), brim_width(brim_width)
     {
         if (filament_types.size() > 1) {
-            BOOST_LOG_TRIVIAL(warning)
+            BOOST_LOG_TRIVIAL(debug)
                 << "SupportSpotsGenerator does not currently handle different materials properly, only first will be used";
         }
         if (filament_types.empty() || filament_types[0].empty()) {