its definitely noticeable in a lot of games. Was playing salt and sanctuary the other day, it seemed unresponsive, especially when trying to do the parry, got to adjust the timing earlier. Minecraft you can notice hte buttons not responding quickly, when i try and stack items on the table, they don't always register. Street fighter 3 and alpha 3 its very difficult to pull of special moves, though i attributed it to the dpad. Its not always registering the presses, so i assumed it wasn't making contact every time with teh switch. Might be this polling issue. Is there a tool that can be used to definitively test?