Why 30 or 60fps, but never 48, 50, etc... ?

[SvennoJ]

Since blu-ray came out most modern tvs have supported 24hz playback, yet no dev has ever dared to use the true cinematic frame rate :)

With variable refresh rate games will still aim for that 30 or 60 as it will be decades before all tvs are hdmi 2.1 with vrr. Best to hope for is that games will support an unlocked frame rate mode that uses vrr. Then the capabilities of each specific tv comes into question. There is no standard for minimum and maximum frame rate supported for vrr, likely each tv will have its own sweet spot.

I do like the 144hz display on my laptop, running games in locked 36, 48 or 72 is a lot nicer than the standard 30, 60 steps. Plus the higher the standard refresh rate, the less impact a dropped frame has.

VRR will have to prove itself. It will remove screen tear, yet introduces judder. A locked stable frame rate is still better than going between 40 and 90 depending on what happens on screen. For racing stability is key, with VRR comes variable input/display lag. Solve one problem, introduce another.