This message simply tells you that the profiling takes time, not that it has failed, you can click on the "Continue anyway" button and follow the profiling by the progress bar at the bottom of the profiler.
The old profiler also shows this message, if the profiling takes a long time, but the delays for its display are a bit longer.
and as the message indicates, if you increase or decrease the max speed according to your motor, the profiling could be done more quickly.