updated comment

Author: bdieudonne

src/board_controller/ant_neuro/ant_neuro.cpp

@@ -281,7 +281,9 @@ void AntNeuroBoard::read_thread ()
             }
             std::this_thread::sleep_for (std::chrono::milliseconds (1));
             if (impedance_mode) {
-                std::this_thread::sleep_for (std::chrono::milliseconds (500)); // some more sleep; twice every second should be more than enough
+                 // some more sleep; twice every second should be more than enough
+                 // if left out, it yields impedances at around 64 Hz
+                std::this_thread::sleep_for (std::chrono::milliseconds (500));
             }
         }
         catch (...)