...back in the CRT era i needed at least a 72Hz refresh rate to not feel any discomfort; that doesn't exactly correlate with framerates on modern LCD displays but i think it's a good proxy for the threshold of general perceptiblity...
...are greater framerates smoother?..sure, especially in my peripheral vision, but 72 FPS is generally good-enough beyond which returns start diminishing...
...i tie back my hair or tuck it behind my ears when i eat...