diff --git a/src/thread/pipipelinethread.h b/src/thread/pipipelinethread.h
index 88ea16cf..354ab277 100644
--- a/src/thread/pipipelinethread.h
+++ b/src/thread/pipipelinethread.h
@@ -33,7 +33,7 @@ public:
 	PIPipelineThread() {
 		cnt = 0;
 		max_size = 0;
-		wait_next_pipe = true;
+		wait_next_pipe = false;
 		next_overload = false;
 	}
 	~PIPipelineThread() {
@@ -48,7 +48,8 @@ public:
 	EVENT_HANDLER1(void, enqueue, const Tin &, v) {enqueue(v, 0);}
 	EVENT_HANDLER2(void, enqueue, const Tin &, v, bool *, overload) {
 		mutex.lock();
-		if (max_size > 0 && in.size() < max_size) {
+//		piCout << "enque" << max_size << in.size();
+		if (max_size == 0 || in.size() < max_size) {
 			in.enqueue(v);
 			if (overload) *overload = false;
 		} else {
@@ -104,7 +105,7 @@ public:
 
 	void setMaxQueSize(uint count) {
 		mutex.lock();
-		count = max_size;
+		max_size = count;
 		if (max_size > 0 && in.size() > max_size) in.resize(max_size);
 		mutex.unlock();
 	}
@@ -125,17 +126,20 @@ private:
 			return;
 		}
 		if (next_overload && wait_next_pipe) {
+			mutex.unlock();
 			calculated(last, &next_overload);
+			piMSleep(10);
 		} else {
 			Tin t = in.dequeue();
-			bool ok = true;
 			mutex.unlock();
+			bool ok = true;
 			Tout r = calc(t, ok);
 			if (ok) {
 				mutex_l.lock();
 				last = r;
 				mutex_l.unlock();
 				cnt++;
+//				next_overload = true;
 				calculated(r, &next_overload);
 			}
 		}