Notice N5404 - You may need to run the benchmark a few times to obtain a stable result. While in general the benchmark is stable (as it averages the results internally) and one run is enough, in certain circumstances (e.g. program activity, SMP operation) the results may vary by a certain amount from run to run.
Fix: Run the benchmark until the score does not change from run to run.
For more information, please see the (FAQ).