diff --git a/examples/dminer/src/dminer/core/chunk.d b/examples/dminer/src/dminer/core/chunk.d
index 0ce5aa47..14868fe6 100644
--- a/examples/dminer/src/dminer/core/chunk.d
+++ b/examples/dminer/src/dminer/core/chunk.d
@@ -151,6 +151,7 @@ struct SmallChunk {
     protected ulong[8] canPassPlanesX; // 64 bytes WEST to EAST
     protected ulong[8] canPassPlanesY; // 64 bytes DOWN to UP
     protected ulong[8] canPassPlanesZ; // 64 bytes NORTH to SOUTH
+
     protected ubyte[6] canPassFromTo; // index is FROM direction, ubyte is DirMask of TO direction; 1 means can pass FROM .. TO
     //ulong[6][6] canPassFromTo; // 288 bytes
     SmallChunk * [6] nearChunks;
@@ -1554,7 +1555,7 @@ struct VisibilityCheckIterator {
             return;
         // direction test (TODO)
         int dot = diff.dot(cameraDirection);
-        if (dot < 3000)
+        if (dot < 8000)
             return;
         //....
         // plan visiting
@@ -1618,9 +1619,9 @@ struct VisibilityCheckIterator {
         this.visitor = visitor;
         this.cameraDirection = cameraDirection;
         Vector3d cameraOffset = cameraDirection;
-        cameraOffset.x /= 16;
-        cameraOffset.y /= 16;
-        cameraOffset.z /= 16;
+        cameraOffset.x /= 7;
+        cameraOffset.y /= 7;
+        cameraOffset.z /= 7;
         this.camPos = startPos - cameraOffset;
         //if (!startChunk)
         //    return;
diff --git a/examples/dminer/src/minermain.d b/examples/dminer/src/minermain.d
index 8bb6f4f3..820a3359 100644
--- a/examples/dminer/src/minermain.d
+++ b/examples/dminer/src/minermain.d
@@ -60,6 +60,13 @@ extern (C) int UIAppMain(string[] args) {
     return Platform.instance.enterMessageLoop();
 }
 
+class ChunkVisitCounter : ChunkVisitor {
+    int count;
+    void visit(World world, SmallChunk * chunk) {
+        count++;
+    }
+}
+
 class MinerDrawable : MaterialDrawableObject, ChunkVisitor {
 
     import dlangui.graphics.scene.node;
@@ -83,7 +90,6 @@ class MinerDrawable : MaterialDrawableObject, ChunkVisitor {
         /// override it
         _node = node;
         //Log.d("drawing Miner scene");
-        _chunkIterator.start(_world, _world.camPosition.pos, MAX_VIEW_DISTANCE);
         //_chunkVisitor.init(_world, MAX_VIEW_DISTANCE, this);
         _pos = _world.camPosition.pos;
         _camPosition = _cam.translation;
@@ -96,9 +102,14 @@ class MinerDrawable : MaterialDrawableObject, ChunkVisitor {
         camVector.x = cast(int)(_camForwardVector.x * 256);
         camVector.y = cast(int)(_camForwardVector.y * 256);
         camVector.z = cast(int)(_camForwardVector.z * 256);
+        ChunkVisitCounter countVisitor = new ChunkVisitCounter();
+        _chunkIterator.start(_world, _world.camPosition.pos, MAX_VIEW_DISTANCE);
+        _chunkIterator.visitVisibleChunks(countVisitor, camVector);
+        long durationNoDraw = currentTimeMillis() - ts;
+        _chunkIterator.start(_world, _world.camPosition.pos, MAX_VIEW_DISTANCE);
         _chunkIterator.visitVisibleChunks(this, camVector);
         long duration = currentTimeMillis() - ts;
-        Log.d("drawing of Miner scene finished in ", duration, " ms  skipped:", _skippedCount, " drawn:", _drawnCount);
+        Log.d("drawing of Miner scene finished in ", duration, " ms  skipped:", _skippedCount, " drawn:", _drawnCount, " duration(noDraw)=", durationNoDraw);
     }
     void visit(World world, SmallChunk * chunk) {
         if (chunk) {