Add time debug info. Fix sleep duration for audio sync.

Assets/Cryville/Crtr/InputProxy.cs

@@ -194,6 +194,13 @@ namespace Cryville.Crtr {
 				}
 			}
 		}
+		public double GetTimestampAverage() {
+			double result = 0;
+			foreach (var src in _sproxies.Keys) {
+				result += src.Handler.GetCurrentTimestamp() - _timeOrigins[src.Handler];
+			}
+			return result / _sproxies.Count;
+		}
 		#endregion
 	}