Since I've upgraded to a big screen 600hz plasma I've noticed that 60 fps games (Rage, All the Call Of Dutys) look absolutely great, but every single game that runs at 30 frames per second looks atrocious. What I mean by this is that if you play a game like Skyrim (30fps) and stand still everything around you looks sharp and crystal clear, but if you pan the camera around it gets a juddery double image effect to the point that you can't read the letters on a sign.
This is a new problem to me as I've been gaming on a CRT Sony Wega for years and everything looked fine. After doing some research online I've since discovered that this juddery effect is a problem related to a 30 frames per second output going into a 60hz display device. This makes sense to me because if I hook my PC up to my current tv and play Fallout 3 at 60 FPS everything looks fine but if I cap the graphics at 30 FPS it turns all juddery.
The part that really bothers me is when other people claim not to have the same problem and don't know what I'm talking about. This was kind of explained to me in that older tv's with various refresh rates other than 60hz do a better job at masking the motion juddering just due to the timing of their refresh rates.
I've also encountered people who know what I'm talking about and say it's a major drag because 90% of their games are 30 fps and become almost unplayable, but they just learn to live with it.
I know it's not a faulty tv I have or a problem related to the specific model. I've spent hours in the stores with my 360 testing out EVERY 60+ inch tv on the market. Samsung, Panasonic, LG. They all had this awful motion juddering when playing 30 fps games. At one store I had three sales people walking around with me testing every unit and they could all see the problem and agreed it looked terrible. One Panasonic model had a "Motion Smoothing" feature that completely eliminated the screen juddering but when it was activated it also created an extreme level of response lag making aiming just ridiculous.
Does anyone else know what I'm talking about? I do have really sharp vision and my eyes are extra sensitive to things like frame rate and fidelity, I also know I was gaming on a CRT for many years and plasma can't really match it in some ways. But Damn, it's disappointing that even new games like Dead Space 3 or Dishonored are just unpayable for me now on my 360.