diff --git a/libguac/src/client.c b/libguac/src/client.c
index 247fc4b0..e2f789ed 100644
--- a/libguac/src/client.c
+++ b/libguac/src/client.c
@@ -376,6 +376,10 @@ void* __guac_client_output_thread(void* data) {
                 guac_flush(io);
             }
 
+            /* If sync threshold exceeded, don't spin waiting for resync */
+            else
+                guac_client_sleep(GUAC_SERVER_MESSAGE_HANDLE_FREQUENCY);
+
         }
 
         /* If no message handler, just sleep until next sync ping */