diff --git a/libs/ardour/ardour/plugin_insert.h b/libs/ardour/ardour/plugin_insert.h
index 627c847513..f1c03a79d2 100644
--- a/libs/ardour/ardour/plugin_insert.h
+++ b/libs/ardour/ardour/plugin_insert.h
@@ -177,7 +177,7 @@ class LIBARDOUR_API PluginInsert : public Processor
 	/** details of the match currently being used */
 	Match _match;
 
-	void automation_run (BufferSet& bufs, pframes_t nframes);
+	void automation_run (BufferSet& bufs, framepos_t start, pframes_t nframes);
 	void connect_and_run (BufferSet& bufs, pframes_t nframes, framecnt_t offset, bool with_auto, framepos_t now = 0);
 
 	void create_automatable_parameters ();
diff --git a/libs/ardour/ardour/session.h b/libs/ardour/ardour/session.h
index 40ada138a6..a2949c59cc 100644
--- a/libs/ardour/ardour/session.h
+++ b/libs/ardour/ardour/session.h
@@ -791,6 +791,10 @@ class LIBARDOUR_API Session : public PBD::StatefulDestructible, public PBD::Scop
 		return _exporting;
 	}
 
+	bool bounce_processing() const {
+		return _bounce_processing_active;
+	}
+
 	/* this is a private enum, but setup_enum_writer() needs it,
 	   and i can't find a way to give that function
 	   friend access. sigh.
@@ -928,6 +932,7 @@ class LIBARDOUR_API Session : public PBD::StatefulDestructible, public PBD::Scop
 	mutable gint             processing_prohibited;
 	process_function_type    process_function;
 	process_function_type    last_process_function;
+	bool                    _bounce_processing_active;
 	bool                     waiting_for_sync_offset;
 	framecnt_t              _base_frame_rate;
 	framecnt_t              _current_frame_rate;  //this includes video pullup offset
@@ -982,7 +987,7 @@ class LIBARDOUR_API Session : public PBD::StatefulDestructible, public PBD::Scop
 	void process_without_events (pframes_t);
 	void process_with_events    (pframes_t);
 	void process_audition       (pframes_t);
-        int  process_export         (pframes_t);
+	int  process_export         (pframes_t);
 	int  process_export_fw      (pframes_t);
 
 	void block_processing() { g_atomic_int_set (&processing_prohibited, 1); }
diff --git a/libs/ardour/plugin_insert.cc b/libs/ardour/plugin_insert.cc
index 6fbb5cb679..27cae70b62 100644
--- a/libs/ardour/plugin_insert.cc
+++ b/libs/ardour/plugin_insert.cc
@@ -455,13 +455,13 @@ PluginInsert::silence (framecnt_t nframes)
 }
 
 void
-PluginInsert::run (BufferSet& bufs, framepos_t /*start_frame*/, framepos_t /*end_frame*/, pframes_t nframes, bool)
+PluginInsert::run (BufferSet& bufs, framepos_t start_frame, framepos_t /*end_frame*/, pframes_t nframes, bool)
 {
 	if (_pending_active) {
 		/* run as normal if we are active or moving from inactive to active */
 
-		if (_session.transport_rolling()) {
-			automation_run (bufs, nframes);
+		if (_session.transport_rolling() || _session.bounce_processing()) {
+			automation_run (bufs, start_frame, nframes);
 		} else {
 			connect_and_run (bufs, nframes, 0, false);
 		}
@@ -538,10 +538,10 @@ PluginInsert::get_parameter (Evoral::Parameter param)
 }
 
 void
-PluginInsert::automation_run (BufferSet& bufs, pframes_t nframes)
+PluginInsert::automation_run (BufferSet& bufs, framepos_t start, pframes_t nframes)
 {
 	Evoral::ControlEvent next_event (0, 0.0f);
-	framepos_t now = _session.transport_frame ();
+	framepos_t now = start;
 	framepos_t end = now + nframes;
 	framecnt_t offset = 0;
 
diff --git a/libs/ardour/session.cc b/libs/ardour/session.cc
index 4221dceb6a..d6add56c6b 100644
--- a/libs/ardour/session.cc
+++ b/libs/ardour/session.cc
@@ -137,6 +137,7 @@ Session::Session (AudioEngine &eng,
 	: playlists (new SessionPlaylists)
 	, _engine (eng)
 	, process_function (&Session::process_with_events)
+	, _bounce_processing_active (false)
 	, waiting_for_sync_offset (false)
 	, _base_frame_rate (0)
 	, _current_frame_rate (0)
@@ -4169,6 +4170,8 @@ Session::write_one_track (AudioTrack& track, framepos_t start, framepos_t end,
 		Glib::Threads::Mutex::Lock lm (_engine.process_lock());
 	}
 
+	_bounce_processing_active = true;
+
 	_engine.main_thread()->get_buffers ();
 
 	/* call tree *MUST* hold route_lock */
@@ -4334,6 +4337,7 @@ Session::write_one_track (AudioTrack& track, framepos_t start, framepos_t end,
 		}
 	}
 
+	_bounce_processing_active = false;
 
 	if (need_block_size_reset) {
 		track.set_block_size (get_block_size());