The feedback is about unnecessary WaitForNoMotion for Silverlight and WPF tests. Test Studio records all actions with WaitForNoMotion=true and WaitForNoMotionCheckInterval=500 ms. by default which doesn't make sense for many application however it may slow down the playback duration twice or even more. The tip for speeding up the tests by disabling WaitForNoMotion is documented here:
http://www.telerik.com/automated-testing-tools/support/documentation/user-guide/knowledge-base/test-execution/increase_test_execution_speed.aspx

We need to work on optimizing that and make sure to not wait if it is not necessary. At least we need to investigate whether it's safe to decrease the check interval. A sample test showed decreasing the value to 100 ms to 8 steps in a test make them execute twice faster. Of course there is no animation for the application under test in this case, thus the feedback the slowed down execution just doesn't make sense.