|Burning Typhoon said:
Frames are an index of time, so if you get that time index of 2 frame lag, that's equal to 4 frames at 120fps, and it feels just as bad. However, because frames last a shorter amount of time at 120fps, a 1 frame dip isn't going to be as noticeable as a 1 frame dip at 60fps.
Stable framerates are ALWAYS better, though. I'll take 30fps over 60 with dips into 40.
When given the option I generally prefer uncapped frame rates because games feel more responsive. I really started to notice that when Bioshock on 360 gave the option.
But it also depends on how erratic it is, there is a point where it just feels bad. The worst was 6th and 7th gen games sometimes dropping to teens in frame count and shooting up to an uncapped 60 fps. Quake 4 on 360 comes to mind, that was rough.
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