diff --git a/src/pipewire/impl-node.c b/src/pipewire/impl-node.c
index cadf0515c..7295242fa 100644
--- a/src/pipewire/impl-node.c
+++ b/src/pipewire/impl-node.c
@@ -1242,6 +1242,7 @@ static inline int process_node(void *data)
 		trigger_targets(this, status, nsec);
 	} else {
 		/* calculate CPU time when finished */
+		a->signal_time = this->driver_start;
 		calculate_stats(this, a);
 		pw_context_driver_emit_complete(this->context, this);
 	}
@@ -1821,6 +1822,7 @@ again:
 		a->status = PW_NODE_ACTIVATION_TRIGGERED;
 		a->prev_signal_time = a->signal_time;
 		a->signal_time = nsec;
+		node->driver_start = nsec;
 
 		a->sync_timeout = SPA_MIN(min_timeout, DEFAULT_SYNC_TIMEOUT);
 
diff --git a/src/pipewire/private.h b/src/pipewire/private.h
index f1cec889d..0743a3d8b 100644
--- a/src/pipewire/private.h
+++ b/src/pipewire/private.h
@@ -803,6 +803,8 @@ struct pw_impl_node {
 	struct spa_fraction target_rate;
 	uint64_t target_quantum;
 
+	uint64_t driver_start;
+
 	void *user_data;                /**< extra user data */
 };