diff --git a/main/src/application/session.rs b/main/src/application/session.rs
index 3496a95bb..ab0b9a8ff 100644
--- a/main/src/application/session.rs
+++ b/main/src/application/session.rs
@@ -67,7 +67,7 @@ pub trait SessionUi {
         &self,
         session: &Session,
         matrix: &playtime_clip_engine::base::Matrix,
-        event: &reaper_high::ChangeEvent,
+        events: &[reaper_high::ChangeEvent],
     );
     fn mapping_matched(&self, event: MappingMatchedEvent);
     fn target_controlled(&self, event: TargetControlEvent);
@@ -2630,9 +2630,9 @@ impl DomainEventHandler for WeakSession {
                 s.ui.clip_matrix_changed(&s, matrix, events, is_poll);
             }
             #[cfg(feature = "playtime")]
-            ControlSurfaceChangeEventForClipEngine(matrix, event) => {
+            ControlSurfaceChangeEventsForClipEngine(matrix, events) => {
                 let s = session.try_borrow()?;
-                s.ui.process_control_surface_change_event_for_clip_engine(&s, matrix, event);
+                s.ui.process_control_surface_change_event_for_clip_engine(&s, matrix, events);
             }
             MappingMatched(event) => {
                 let s = session.try_borrow()?;
diff --git a/main/src/domain/eventing.rs b/main/src/domain/eventing.rs
index 88224f3e7..c268cc43e 100644
--- a/main/src/domain/eventing.rs
+++ b/main/src/domain/eventing.rs
@@ -37,9 +37,9 @@ pub enum DomainEvent<'a> {
         is_poll: bool,
     },
     #[cfg(feature = "playtime")]
-    ControlSurfaceChangeEventForClipEngine(
+    ControlSurfaceChangeEventsForClipEngine(
         &'a playtime_clip_engine::base::Matrix,
-        &'a reaper_high::ChangeEvent,
+        &'a [reaper_high::ChangeEvent],
     ),
     TimeForCelebratingSuccess,
     ConditionsChanged,
diff --git a/main/src/domain/main_processor.rs b/main/src/domain/main_processor.rs
index 0eda951f5..e43f57e29 100644
--- a/main/src/domain/main_processor.rs
+++ b/main/src/domain/main_processor.rs
@@ -1743,11 +1743,9 @@ impl<EH: DomainEventHandler> MainProcessor<EH> {
                 // Let matrix react to track changes etc.
                 matrix.process_reaper_change_events(events);
                 // Process for GUI
-                for event in events {
-                    self.basics.event_handler.handle_event_ignoring_error(
-                        DomainEvent::ControlSurfaceChangeEventForClipEngine(matrix, event),
-                    );
-                }
+                self.basics.event_handler.handle_event_ignoring_error(
+                    DomainEvent::ControlSurfaceChangeEventsForClipEngine(matrix, events),
+                );
             }
         }
     }
diff --git a/main/src/infrastructure/ui/main_panel.rs b/main/src/infrastructure/ui/main_panel.rs
index 7800a9e27..edf3b37f7 100644
--- a/main/src/infrastructure/ui/main_panel.rs
+++ b/main/src/infrastructure/ui/main_panel.rs
@@ -523,11 +523,11 @@ impl SessionUi for Weak<MainPanel> {
         &self,
         session: &Session,
         matrix: &playtime_clip_engine::base::Matrix,
-        event: &reaper_high::ChangeEvent,
+        events: &[reaper_high::ChangeEvent],
     ) {
         App::get()
             .clip_engine_hub()
-            .send_occasional_matrix_updates_caused_by_reaper(session.id(), matrix, event);
+            .send_occasional_matrix_updates_caused_by_reaper(session.id(), matrix, events);
     }
 
     fn mapping_matched(&self, event: MappingMatchedEvent) {