diff --git a/src/pipewire-jack.c b/src/pipewire-jack.c
index 0d1c071e1..c59396d66 100644
--- a/src/pipewire-jack.c
+++ b/src/pipewire-jack.c
@@ -287,6 +287,9 @@ struct client {
 	unsigned int started:1;
 	unsigned int active:1;
 	unsigned int destroyed:1;
+
+	jack_position_t jack_position;
+	jack_transport_state_t jack_state;
 };
 
 static void init_port_pool(struct client *c, enum spa_direction direction)
@@ -497,15 +500,6 @@ jack_get_version_string(void)
 	return "0.0.0.0";
 }
 
-static void on_sync_reply(void *data, uint32_t id, int seq)
-{
-	struct client *client = data;
-	if (id != 0)
-		return;
-	client->last_sync = seq;
-	pw_thread_loop_signal(client->context.loop, false);
-}
-
 static void on_state_changed(void *data, enum pw_remote_state old,
                              enum pw_remote_state state, const char *error)
 {
@@ -535,6 +529,15 @@ static const struct pw_remote_events remote_events = {
 	.state_changed = on_state_changed,
 };
 
+static void on_sync_reply(void *data, uint32_t id, int seq)
+{
+	struct client *client = data;
+	if (id != 0)
+		return;
+	client->last_sync = seq;
+	pw_thread_loop_signal(client->context.loop, false);
+}
+
 static const struct pw_core_proxy_events core_events = {
 	PW_VERSION_CORE_EVENTS,
 	.done = on_sync_reply,
@@ -708,10 +711,9 @@ static inline void debug_position(struct client *c, jack_position_t *p)
 
 static inline void jack_to_position(jack_position_t *s, struct pw_node_activation *a)
 {
-	struct spa_io_segment *d = &a->pending.segment;
+	struct spa_io_segment *d = &a->segment;
 
 	if (s->valid & JackPositionBBT) {
-		SEQ_WRITE(a->pending.seq);
 		d->bar.flags = SPA_IO_SEGMENT_BAR_FLAG_VALID;
 		if (s->valid & JackBBTFrameOffset)
 			d->bar.offset = s->bbt_offset;
@@ -722,12 +724,12 @@ static inline void jack_to_position(jack_position_t *s, struct pw_node_activatio
 		d->bar.bpm = s->beats_per_minute;
 		d->bar.beat = (s->bar - 1) * s->beats_per_bar + (s->beat - 1) +
 			(s->tick / s->ticks_per_beat);
-		SEQ_WRITE(a->pending.seq);
 	}
 }
 
-static inline jack_transport_state_t position_to_jack(struct spa_io_position *s, jack_position_t *d)
+static inline jack_transport_state_t position_to_jack(struct pw_node_activation *a, jack_position_t *d)
 {
+	struct spa_io_position *s = &a->position;
 	jack_transport_state_t state;
 	struct spa_io_segment *seg = &s->segments[0];
 	uint64_t running;
@@ -764,7 +766,7 @@ static inline jack_transport_state_t position_to_jack(struct spa_io_position *s,
 		d->frame = seg->position;
 
 	d->valid = 0;
-	if (seg->bar.owner && SPA_FLAG_CHECK(seg->bar.flags, SPA_IO_SEGMENT_BAR_FLAG_VALID)) {
+	if (a->segment_owner[0] && SPA_FLAG_CHECK(seg->bar.flags, SPA_IO_SEGMENT_BAR_FLAG_VALID)) {
 		double abs_beat;
 		long beats;
 
@@ -794,13 +796,145 @@ static inline jack_transport_state_t position_to_jack(struct spa_io_position *s,
 	return state;
 }
 
+static inline int wait_sync(struct client *c)
+{
+	uint64_t cmd, nsec;
+	int fd = c->socket_source->fd;
+	struct spa_io_position *pos = c->position;
+	struct pw_node_activation *activation = c->activation;
+
+	/* this is blocking if nothing ready */
+	if (read(fd, &cmd, sizeof(cmd)) != sizeof(cmd))
+		pw_log_warn(NAME" %p: read failed %m", c);
+	if (cmd > 1)
+		pw_log_warn(NAME" %p: missed %"PRIu64" wakeups", c, cmd - 1);
+
+	if (pos == NULL) {
+		pw_log_error(NAME" %p: missing position", c);
+		return -1;
+	}
+
+	nsec = pos->clock.nsec;
+	activation->status = PW_NODE_ACTIVATION_AWAKE;
+	activation->awake_time = nsec;
+
+	return 0;
+}
+
+static inline uint32_t cycle_wait(struct client *c)
+{
+	uint32_t buffer_size, sample_rate;
+	struct spa_io_position *pos = c->position;
+	struct pw_node_activation *activation = c->activation;
+	struct pw_node_activation *driver = c->driver_activation;
+
+	if (wait_sync(c) < 0)
+		return 0;
+
+	buffer_size = pos->clock.duration;
+	if (buffer_size != c->buffer_size) {
+		pw_log_info(NAME" %p: buffersize %d", c, buffer_size);
+		c->buffer_size = buffer_size;
+		if (c->bufsize_callback)
+			c->bufsize_callback(c->buffer_size, c->bufsize_arg);
+	}
+
+	sample_rate = pos->clock.rate.denom;
+	if (sample_rate != c->sample_rate) {
+		pw_log_info(NAME" %p: sample_rate %d", c, sample_rate);
+		c->sample_rate = sample_rate;
+		if (c->srate_callback)
+			c->srate_callback(c->sample_rate, c->srate_arg);
+	}
+
+	c->jack_state = position_to_jack(driver, &c->jack_position);
+
+	if (driver) {
+		if (activation->pending_sync) {
+			if (c->sync_callback == NULL ||
+			    c->sync_callback(c->jack_state, &c->jack_position, c->sync_arg))
+				activation->pending_sync = false;
+		}
+		if (c->xrun_count != driver->xrun_count &&
+		    c->xrun_count != 0 && c->xrun_callback)
+			c->xrun_callback(c->xrun_arg);
+		c->xrun_count = driver->xrun_count;
+	}
+	pw_log_trace(NAME" %p: wait %"PRIu64" %d %d %d %"PRIi64" %f", c,
+			activation->awake_time, c->buffer_size, c->sample_rate,
+			c->jack_position.frame, pos->clock.delay, pos->clock.rate_diff);
+
+	return buffer_size;
+}
+
+static inline void signal_sync(struct client *c)
+{
+	struct timespec ts;
+	uint64_t cmd, nsec;
+	struct link *l;
+	struct pw_node_activation *activation = c->activation;
+
+	process_tee(c);
+
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+	nsec = SPA_TIMESPEC_TO_NSEC(&ts);
+	activation->status = PW_NODE_ACTIVATION_FINISHED;
+	activation->finish_time = nsec;
+
+	cmd = 1;
+	pw_array_for_each(l, &c->links) {
+		struct pw_node_activation_state *state;
+
+		if (l->activation == NULL)
+			continue;
+
+		state = &l->activation->state[0];
+
+		pw_log_trace(NAME" %p: link %p %p %d/%d", c, l, state,
+				state->pending, state->required);
+
+		if (pw_node_activation_state_dec(state, 1)) {
+			l->activation->status = PW_NODE_ACTIVATION_TRIGGERED;
+			l->activation->signal_time = nsec;
+
+			pw_log_trace(NAME" %p: signal %p %p", c, l, state);
+
+			if (write(l->signalfd, &cmd, sizeof(cmd)) != sizeof(cmd))
+				pw_log_warn(NAME" %p: write failed %m", c);
+		}
+	}
+}
+
+static inline void cycle_signal(struct client *c, int status)
+{
+	struct pw_node_activation *driver = c->driver_activation;
+	struct pw_node_activation *activation = c->activation;
+
+	if (status == 0) {
+		if (c->timebase_callback && driver && driver->segment_owner[0] == c->node_id) {
+			if (activation->pending_new_pos ||
+			    c->jack_state == JackTransportRolling ||
+			    c->jack_state == JackTransportLooping) {
+				c->timebase_callback(c->jack_state,
+						     c->buffer_size,
+						     &c->jack_position,
+						     activation->pending_new_pos,
+						     c->timebase_arg);
+
+				activation->pending_new_pos = false;
+
+				debug_position(c, &c->jack_position);
+				jack_to_position(&c->jack_position, activation);
+			}
+		}
+	}
+	signal_sync(c);
+}
+
 static void
 on_rtsocket_condition(void *data, int fd, uint32_t mask)
 {
 	struct client *c = data;
-	struct timespec ts;
-	jack_position_t jack_position;
-	jack_transport_state_t jack_state;
 
 	if (mask & (SPA_IO_ERR | SPA_IO_HUP)) {
 		pw_log_warn(NAME" %p: got error", c);
@@ -809,109 +943,14 @@ on_rtsocket_condition(void *data, int fd, uint32_t mask)
 	}
 
 	if (mask & SPA_IO_IN) {
-		uint64_t cmd, nsec;
-		uint32_t buffer_size, sample_rate;
-		struct link *l;
-		struct spa_io_position *pos = c->position;
-		struct pw_node_activation *activation = c->activation;
-		struct pw_node_activation *driver = c->driver_activation;
+		uint32_t buffer_size;
+		int status;
 
-		if (read(fd, &cmd, sizeof(cmd)) != sizeof(cmd))
-			pw_log_warn(NAME" %p: read failed %m", c);
-		if (cmd > 1)
-			pw_log_warn(NAME" %p: missed %"PRIu64" wakeups", c, cmd - 1);
+		buffer_size = cycle_wait(c);
 
-		if (pos == NULL) {
-			pw_log_error(NAME" %p: missing position", c);
-			return;
-		}
+		status = c->process_callback ? c->process_callback(buffer_size, c->process_arg) : 0;
 
-		nsec = pos->clock.nsec;
-		activation->status = PW_NODE_ACTIVATION_AWAKE;
-		activation->awake_time = nsec;
-
-		buffer_size = pos->clock.duration;
-		if (buffer_size != c->buffer_size) {
-			pw_log_info(NAME" %p: buffersize %d", c, buffer_size);
-			c->buffer_size = buffer_size;
-			if (c->bufsize_callback)
-				c->bufsize_callback(c->buffer_size, c->bufsize_arg);
-		}
-
-		sample_rate = pos->clock.rate.denom;
-		if (sample_rate != c->sample_rate) {
-			pw_log_info(NAME" %p: sample_rate %d", c, sample_rate);
-			c->sample_rate = sample_rate;
-			if (c->srate_callback)
-				c->srate_callback(c->sample_rate, c->srate_arg);
-		}
-
-		jack_state = position_to_jack(pos, &jack_position);
-
-		if (driver) {
-			if (activation->pending_sync) {
-				if (c->sync_callback == NULL ||
-				    c->sync_callback(jack_state, &jack_position, c->sync_arg))
-					activation->pending_sync = false;
-			}
-			if (c->xrun_count != driver->xrun_count &&
-			    c->xrun_count != 0 && c->xrun_callback)
-				c->xrun_callback(c->xrun_arg);
-			c->xrun_count = driver->xrun_count;
-		}
-
-		pw_log_trace(NAME" %p: do process %"PRIu64" %d %d %d %"PRIi64" %f", c,
-				nsec, c->buffer_size, c->sample_rate,
-				jack_position.frame, pos->clock.delay, pos->clock.rate_diff);
-
-		if (c->process_callback)
-			c->process_callback(c->buffer_size, c->process_arg);
-
-		if (c->timebase_callback && driver && driver->pending.segment.bar.owner == c->node_id) {
-			if (activation->pending_new_pos ||
-			    jack_state == JackTransportRolling ||
-			    jack_state == JackTransportLooping) {
-				c->timebase_callback(jack_state,
-						     buffer_size,
-						     &jack_position,
-						     activation->pending_new_pos,
-						     c->timebase_arg);
-
-				activation->pending_new_pos = false;
-
-				debug_position(c, &jack_position);
-				jack_to_position(&jack_position, driver);
-			}
-		}
-		process_tee(c);
-
-		clock_gettime(CLOCK_MONOTONIC, &ts);
-		nsec = SPA_TIMESPEC_TO_NSEC(&ts);
-		activation->status = PW_NODE_ACTIVATION_FINISHED;
-		activation->finish_time = nsec;
-
-		cmd = 1;
-		pw_array_for_each(l, &c->links) {
-			struct pw_node_activation_state *state;
-
-			if (l->activation == NULL)
-				continue;
-
-			state = &l->activation->state[0];
-
-			pw_log_trace(NAME" %p: link %p %p %d/%d", c, l, state,
-					state->pending, state->required);
-
-			if (pw_node_activation_state_dec(state, 1)) {
-				l->activation->status = PW_NODE_ACTIVATION_TRIGGERED;
-				l->activation->signal_time = nsec;
-
-				pw_log_trace(NAME" %p: signal %p %p", c, l, state);
-
-				if (write(l->signalfd, &cmd, sizeof(cmd)) != sizeof(cmd))
-					pw_log_warn(NAME" %p: write failed %m", c);
-			}
-		}
+		cycle_signal(c, status);
 	}
 }
 
@@ -2151,21 +2190,22 @@ int jack_is_realtime (jack_client_t *client)
 SPA_EXPORT
 jack_nframes_t jack_thread_wait (jack_client_t *client, int status)
 {
-	pw_log_warn(NAME" %p: not implemented %d", client, status);
+	pw_log_error(NAME" %p: jack_thread_wait: deprecated, use jack_cycle_wait/jack_cycle_signal", client);
 	return 0;
 }
 
 SPA_EXPORT
 jack_nframes_t jack_cycle_wait (jack_client_t* client)
 {
-	pw_log_warn(NAME" %p: not implemented", client);
-	return 0;
+	struct client *c = (struct client *) client;
+	return cycle_wait(c);
 }
 
 SPA_EXPORT
 void jack_cycle_signal (jack_client_t* client, int status)
 {
-	pw_log_warn(NAME" %p: not implemented %d", client, status);
+	struct client *c = (struct client *) client;
+	cycle_signal(c, status);
 }
 
 SPA_EXPORT
@@ -3366,7 +3406,7 @@ int jack_release_timebase (jack_client_t *client)
 	if (a == NULL)
 		return -EIO;
 
-	if (!ATOMIC_CAS(a->pending.segment.bar.owner, c->node_id, 0))
+	if (!ATOMIC_CAS(a->segment_owner[0], c->node_id, 0))
 		return -EINVAL;
 
 	c->timebase_callback = NULL;
@@ -3423,15 +3463,15 @@ int  jack_set_timebase_callback (jack_client_t *client,
 		return -EIO;
 
 	/* was ok */
-	if (ATOMIC_LOAD(a->pending.segment.bar.owner) == c->node_id)
+	if (ATOMIC_LOAD(a->segment_owner[0]) == c->node_id)
 		return 0;
 
 	/* try to become master */
 	if (conditional) {
-		if (!ATOMIC_CAS(a->pending.segment.bar.owner, 0, c->node_id))
+		if (!ATOMIC_CAS(a->segment_owner[0], 0, c->node_id))
 			return -EBUSY;
 	} else {
-		ATOMIC_STORE(a->pending.segment.bar.owner, c->node_id);
+		ATOMIC_STORE(a->segment_owner[0], c->node_id);
 	}
 
 	c->timebase_callback = timebase_callback;
@@ -3464,7 +3504,7 @@ jack_transport_state_t jack_transport_query (const jack_client_t *client,
 	jack_transport_state_t jack_state = JackTransportStopped;
 
 	if (a != NULL)
-		jack_state = position_to_jack(&a->position, pos);
+		jack_state = position_to_jack(a, pos);
 	else if (pos != NULL)
 		memset(pos, 0, sizeof(jack_position_t));
 
@@ -3502,25 +3542,20 @@ int  jack_transport_reposition (jack_client_t *client,
 {
 	struct client *c = (struct client *) client;
 	struct pw_node_activation *a = c->driver_activation;
-	uint32_t seq1, seq2;
-	if (!a)
+	struct pw_node_activation *na = c->activation;
+	if (!a || !na)
 		return -EIO;
 
 	if (pos->valid & ~(JackPositionBBT|JackPositionTimecode))
 		return -EINVAL;
 
 	pw_log_debug("frame:%u", pos->frame);
-
-	do {
-		seq1 = SEQ_WRITE(a->pending.seq);
-		a->pending.change_mask |= PW_NODE_ACTIVATION_UPDATE_REPOSITION;
-		a->pending.reposition.flags = 0;
-		a->pending.reposition.start = 0;
-		a->pending.reposition.duration = 0;
-		a->pending.reposition.position = pos->frame;
-		a->pending.reposition.rate = 1.0;
-		seq2 = SEQ_WRITE(a->pending.seq);
-	} while (!SEQ_WRITE_SUCCESS(seq1, seq2));
+	na->reposition.flags = 0;
+	na->reposition.start = 0;
+	na->reposition.duration = 0;
+	na->reposition.position = pos->frame;
+	na->reposition.rate = 1.0;
+	ATOMIC_STORE(a->reposition_owner, c->node_id);
 
 	return 0;
 }
@@ -3528,17 +3563,9 @@ int  jack_transport_reposition (jack_client_t *client,
 static void update_command(struct client *c, uint32_t command)
 {
 	struct pw_node_activation *a = c->driver_activation;
-	uint32_t seq1, seq2;
-
 	if (!a)
 		return;
-
-	do {
-		seq1 = SEQ_WRITE(a->pending.seq);
-		a->pending.change_mask |= PW_NODE_ACTIVATION_UPDATE_COMMAND;
-		a->pending.command = command;
-		seq2 = SEQ_WRITE(a->pending.seq);
-	} while (!SEQ_WRITE_SUCCESS(seq1, seq2));
+	ATOMIC_STORE(a->command, command);
 }
 
 SPA_EXPORT