[youtube]https://www.youtube.com/watch?v=FPMknDLLXC0[/youtube]
If you’re a hardcore sim racer or gamer, you’ve probably heard the term “Input Lag”. What is “Input Lag” you ask.. Here’s one of the Wikipedia definitions
Display Lag
This is the lag caused by the television or monitor (which is also called “input lag” by the first definition above). Image processing (such as upscaling, 100 Hz, motion smoothing, edge smoothing) takes time and therefore adds some degree of input lag. It is generally considered that input lag of a television below 30 ms is not noticeable,[6] discussions on gaming forums tend to agree with this value. Once the frame has been processed, the final step is the pixel response time for the pixel to display the correct colour for the new frame.
Full Wikipedia Definition of Input Lag – HERE
Niels Heusinkveld has put together this video that clearly shows the lag between how his wheel is turning versus what the wheel on screen, or in game is doing. Interesting that he’s using a hammer to turn the wheel, I guess it’s to be as slow and precise as possible. Based on this, Assetto Corsa has almost twice the lag of rFactor. He mentions the data output of Assetto being what he assumes is 60 HZ.
If that’s the case with these titles. I’d like to see the same thing done with WRC 4, iRacing, PCars and F1 2013 to see across the board, how many video frames it takes for the on screen wheel to turn. Watch the video and you’ll see what I mean.