I recently bought a pair of Xtokki 360 converters, listed here:
Since they are listed as lagless, the first thing I did was test lag. My test went like this:
Boot up Street Fighter III: Third Strike and some variation of SF2 on 360 and on computer through FBA. In one slot, I have a controller I’m pretty confident is lagless (Madcatz fightpad was used here, though I’ve also tested wireless 360 and PS3 controllers against the Madcatz pad and they all seem to be lagless). In the other slot, I have what I’m testing against it. In this case, an official Sony PS2 controller hooked up through the Xtokki converter.
Then I have both sides choose the same character, have them stand next to each other, and attempt to hit the same button on both controllers on the same time. My expectation is that if they lag the same, the moves should tie most of the time and who wins should be roughly evenly distributed. I can’t be sure I’ll hit it exactly spot on every time, so I do this a lot of times and observe the results. I also make sure both controllers spend time in both slots, in case player 1 has an advantage in any situation.
The results are usually consistent enough that I can reach a conclusion and be pretty sure. When I tested my Madcatz fightpad vs a wireless 360 controller for instance, usually the moves would tie, and on the occasions that they did not, the controller that won was more or less split evenly. I feel it’s pretty safe to assume in that case that each controller is lagging about the same amount.
My results with the Xtokki converter were not so positive. While the inputs sometimes tied, often the Madcatz controller would win straight up, and I could not get the PS2 controller to win unless I purposefully delayed the Madcatz button press. I observed this on both 360 and PC, and the results were similar regardless of which controller was mapped to player 1. I had a couple friends attempt the same test, and they had similar results. Based on what we observed, we found it hard to believe that the Xtokki converters are actually lagless.
I realize this isn’t the most clinical test, and I welcome suggestions on how to improve it and I’ll furnish whatever proof is needed to the best of my ability. I do not own a high speed camera but I do own a Flip video camera and can record my button inputs as well as the results on screen. If there is anything I’m missing or any way I might solve this problem, I’d love to hear that as well. At this point I’m hoping the iNPiN converters are lagless as advertised, and plan on ordering those soon to find out.