diff --git a/libs/ardour/ardour/audio_port.h b/libs/ardour/ardour/audio_port.h
index 419d067d54..01b42d1a21 100644
--- a/libs/ardour/ardour/audio_port.h
+++ b/libs/ardour/ardour/audio_port.h
@@ -43,7 +43,7 @@ public:
 	void cycle_split ();
 
 	/* reset SRC, clear out any state */
-	void reinit ();
+	void reinit (bool with_ratio);
 
 	Buffer& get_buffer (pframes_t nframes) {
 		return get_audio_buffer (nframes);
diff --git a/libs/ardour/ardour/port.h b/libs/ardour/ardour/port.h
index ff35b1a550..a9fcd0f0ac 100644
--- a/libs/ardour/ardour/port.h
+++ b/libs/ardour/ardour/port.h
@@ -121,7 +121,7 @@ public:
 	virtual void cycle_start (pframes_t);
 	virtual void cycle_end (pframes_t) = 0;
 	virtual void cycle_split () = 0;
-	virtual void reinit () {}
+	virtual void reinit (bool) {}
 	virtual Buffer& get_buffer (pframes_t nframes) = 0;
 	virtual void flush_buffers (pframes_t /*nframes*/) {}
 	virtual void transport_stopped () {}
diff --git a/libs/ardour/ardour/port_manager.h b/libs/ardour/ardour/port_manager.h
index 4ebcd62a2d..0c83273ead 100644
--- a/libs/ardour/ardour/port_manager.h
+++ b/libs/ardour/ardour/port_manager.h
@@ -189,6 +189,9 @@ public:
 
 	void remove_all_ports ();
 
+	/** reset port-buffers. e.g. after freewheeling */
+	void reinit (bool with_ratio = false);
+
 	void clear_pending_port_deletions ();
 
 	virtual void add_pending_port_deletion (Port*) = 0;
@@ -303,8 +306,6 @@ protected:
 	 */
 	void cycle_end (pframes_t nframes, Session* s = 0);
 
-	void reinit ();
-
 	void cycle_end_fade_out (gain_t, gain_t, pframes_t, Session* s = 0);
 
 	static std::string port_info_file ();
diff --git a/libs/ardour/audio_port.cc b/libs/ardour/audio_port.cc
index 3dc3d4e970..1e6671ebb4 100644
--- a/libs/ardour/audio_port.cc
+++ b/libs/ardour/audio_port.cc
@@ -127,8 +127,15 @@ AudioPort::cycle_split ()
 }
 
 void
-AudioPort::reinit ()
+AudioPort::reinit (bool with_ratio)
 {
+	/* must not be called concurrently with processing */
+	if (with_ratio) {
+		/* Note: latency changes with quality, caller
+		 * must take care of updating port latencies */
+		_src.setup (resampler_quality ());
+		_src.set_rrfilt (10);
+	}
 	_src.reset ();
 }
 
diff --git a/libs/ardour/port_manager.cc b/libs/ardour/port_manager.cc
index 2f70c696e1..cb0a011eee 100644
--- a/libs/ardour/port_manager.cc
+++ b/libs/ardour/port_manager.cc
@@ -1316,11 +1316,12 @@ PortManager::silence (pframes_t nframes, Session* s)
 		}
 	}
 }
+
 void
-PortManager::reinit ()
+PortManager::reinit (bool with_ratio)
 {
 	for (auto const& p : *_ports.reader ()) {
-		p.second->reinit ();
+		p.second->reinit (with_ratio);
 	}
 }