diff --git a/libsrc/visualization/vsmesh.cpp b/libsrc/visualization/vsmesh.cpp
index 21a2f43e..add9bd71 100644
--- a/libsrc/visualization/vsmesh.cpp
+++ b/libsrc/visualization/vsmesh.cpp
@@ -3584,7 +3584,7 @@ DLL_HEADER void ExportMeshVis(py::module &m)
           static auto last_time = std::chrono::system_clock::now()-std::chrono::seconds(10);
           auto now = std::chrono::system_clock::now();
           double elapsed = std::chrono::duration<double>(now-last_time).count();
-          if (elapsed * fr > 1)
+          if (blocking || elapsed * fr > 1)
             {
               Ng_Redraw(blocking);
               last_time = std::chrono::system_clock::now();