diff --git a/spa/plugins/alsa/alsa-seq-bridge.c b/spa/plugins/alsa/alsa-seq-bridge.c
index 310312c47..f02c985fd 100644
--- a/spa/plugins/alsa/alsa-seq-bridge.c
+++ b/spa/plugins/alsa/alsa-seq-bridge.c
@@ -563,7 +563,7 @@ impl_node_port_enum_params(void *object, int seq,
 			SPA_PARAM_BUFFERS_buffers, SPA_POD_CHOICE_RANGE_Int(2, 1, MAX_BUFFERS),
 			SPA_PARAM_BUFFERS_blocks,  SPA_POD_Int(1),
 			SPA_PARAM_BUFFERS_size,    SPA_POD_CHOICE_RANGE_Int(
-							4096, 4096, INT32_MAX),
+							this->quantum_limit, this->quantum_limit, INT32_MAX),
 			SPA_PARAM_BUFFERS_stride,  SPA_POD_Int(1));
 		break;
 
@@ -927,6 +927,8 @@ impl_init(const struct spa_handle_factory *factory,
 	this->info.n_params = N_NODE_PARAMS;
 	reset_props(&this->props);
 
+	this->quantum_limit = 8192;
+
 	for (i = 0; info && i < info->n_items; i++) {
 		const char *k = info->items[i].key;
 		const char *s = info->items[i].value;
@@ -936,6 +938,8 @@ impl_init(const struct spa_handle_factory *factory,
 		} else if (spa_streq(k, "clock.name")) {
 			spa_scnprintf(this->props.clock_name,
 					sizeof(this->props.clock_name), "%s", s);
+		} else if (spa_streq(k, "clock.quantum-limit")) {
+			spa_atou32(s, &this->quantum_limit, 0);
 		} else if (spa_streq(k, SPA_KEY_API_ALSA_DISABLE_LONGNAME)) {
 			this->props.disable_longname = spa_atob(s);
 		}
diff --git a/spa/plugins/alsa/alsa-seq.c b/spa/plugins/alsa/alsa-seq.c
index 189e4332b..0bc456579 100644
--- a/spa/plugins/alsa/alsa-seq.c
+++ b/spa/plugins/alsa/alsa-seq.c
@@ -696,7 +696,7 @@ static int process_write(struct seq_state *state)
 				out_rt.tv_sec = out_time / SPA_NSEC_PER_SEC;
 				snd_seq_ev_schedule_real(&ev, state->event.queue_id, 0, &out_rt);
 
-				spa_log_info(state->log, "event %d time:%"PRIu64" offset:%d size:%ld port:%d.%d",
+				spa_log_trace_fp(state->log, "event %d time:%"PRIu64" offset:%d size:%ld port:%d.%d",
 					ev.type, out_time, c->offset, size, port->addr.client, port->addr.port);
 
 				if ((err = snd_seq_event_output(state->event.hndl, &ev)) < 0) {
diff --git a/spa/plugins/alsa/alsa-seq.h b/spa/plugins/alsa/alsa-seq.h
index de43948f4..d44ad6258 100644
--- a/spa/plugins/alsa/alsa-seq.h
+++ b/spa/plugins/alsa/alsa-seq.h
@@ -131,6 +131,8 @@ struct seq_state {
 	struct spa_io_clock *clock;
 	struct spa_io_position *position;
 
+	uint32_t quantum_limit;
+
 	int rate_denom;
 	uint32_t duration;
 	uint32_t threshold;
diff --git a/spa/plugins/control/mixer.c b/spa/plugins/control/mixer.c
index 47b04bae7..a74f2f697 100644
--- a/spa/plugins/control/mixer.c
+++ b/spa/plugins/control/mixer.c
@@ -60,6 +60,8 @@ struct impl {
 	struct spa_handle handle;
 	struct spa_node node;
 
+	uint32_t quantum_limit;
+
 	struct spa_log *log;
 
 	struct spa_loop *data_loop;
@@ -363,7 +365,8 @@ next:
 			SPA_TYPE_OBJECT_ParamBuffers, id,
 			SPA_PARAM_BUFFERS_buffers, SPA_POD_CHOICE_RANGE_Int(1, 1, MAX_BUFFERS),
 			SPA_PARAM_BUFFERS_blocks,  SPA_POD_Int(1),
-			SPA_PARAM_BUFFERS_size,    SPA_POD_CHOICE_RANGE_Int(4096, 512, INT32_MAX),
+			SPA_PARAM_BUFFERS_size,    SPA_POD_CHOICE_RANGE_Int(this->quantum_limit,
+				this->quantum_limit, INT32_MAX),
 			SPA_PARAM_BUFFERS_stride,  SPA_POD_Int(1));
 		break;
 
@@ -866,6 +869,7 @@ impl_init(const struct spa_handle_factory *factory,
 {
 	struct impl *this;
 	struct port *port;
+	uint32_t i;
 
 	spa_return_val_if_fail(factory != NULL, -EINVAL);
 	spa_return_val_if_fail(handle != NULL, -EINVAL);
@@ -883,6 +887,16 @@ impl_init(const struct spa_handle_factory *factory,
 		return -EINVAL;
 	}
 
+	this->quantum_limit = 8192;
+
+	for (i = 0; info && i < info->n_items; i++) {
+		const char *k = info->items[i].key;
+		const char *s = info->items[i].value;
+		if (spa_streq(k, "clock.quantum-limit")) {
+			spa_atou32(s, &this->quantum_limit, 0);
+		}
+	}
+
 	spa_hook_list_init(&this->hooks);
 
 	this->node.iface = SPA_INTERFACE_INIT(