# Sandbox.Modals.BenchmarkTestSummary.OnePercentLowMs

```csharp
double OnePercentLowMs { get; set; }
```

P99 frame time — time exceeded by 1% of frames.

Declared in [Sandbox.Modals.BenchmarkTestSummary](/api/Sandbox.Modals.BenchmarkTestSummary).
Assembly: `Sandbox.Engine`.