QualitySettings.vSyncCount

説明

VSync の数を設定する。

The number of VSyncs that should pass between each frame. Use 'Don't Sync' (0) to not wait for VSync. Value must be 0, 1, 2, 3, or 4.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void Example() {
        QualitySettings.vSyncCount = 1;
    }
}

関連項目: Quality Settings.