Is it an anatomy thing on a case to case basis? You'll hear people say 30-45fps is perfectly smooth for them, and yet if I ever drop that low in games(hell as soon as I drop under 60, even if it's 55fps, the difference in fluidity is extremely apparent and it just becomes a stuttery mess.) 30-35fps is absolutely unplayable to me, to the point where my eyes would hurt. 40-45 fps is ok, still very noticeable stutter, doesn't feel/look good but it doesn't give me eyeaches. So does aybody have a proven answer as to why this happens?