ml-agents/unity-environment/Assets/ML-Agents/Examples/Walker/Scripts/WalkerAcademy.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using MLAgents;

public class WalkerAcademy : Academy
{
    public override void InitializeAcademy()
    {
        Monitor.verticalOffset = 1f;

        // We increase the Physics solver iterations in order to
        // make walker joint calculations more accurate.
        Physics.defaultSolverIterations = 12;
        Physics.defaultSolverVelocityIterations = 12;
        Time.fixedDeltaTime = 0.01333f; //(75fps). default is .2 (60fps)
        Time.maximumDeltaTime = .15f; // Default is .33
    }

    public override void AcademyReset()
    {
    }

    public override void AcademyStep()
    {
    }
}