getAverageFrameTime static method
Get average frame time
Implementation
static Duration getAverageFrameTime() {
if (_frameTimes.isEmpty) return Duration.zero;
final int totalMicroseconds = _frameTimes
.fold(0, (sum, duration) => sum + duration.inMicroseconds);
return Duration(microseconds: totalMicroseconds ~/ _frameTimes.length);
}