I just got back into playing quakelive after having a terrible net connection for about a year, and my lcd's response time is very noticable. Everything looks smooth, but it feels like I'm playing with like 80 ping when it's 40.

It feels like input lag, but I played on the same monitor a year ago and it felt fine. It could just be placebo, but I just wanted to ask if there are any settings I could use to improve the response time?

The main thing that has changed is that I switched from a 4870 to SLI GTX660's. I know that SLI can add input lag, but Quakelive doesn't use SLI, so could it still affect it?