I get around 80 FPS in Farcry 4, but when I try to lock it to 60 FPS my framerate hovers around 55

DudE132

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May 28, 2011
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With the framerate uncapped in Farcry 4, I'm averaging around 80 FPS with no drops so locking to 60 should be no problem. Yet when I set the FPS limit to 60 with RivaTuner, the FPS keeps jumping around between 55-58.

With Nvidia inspector the FPS lock is more consistent but it still jumps around from 56-63 at times.

Why isn't the FPS locking at a solid and consistent 60? Why does the FPS drop below 60 when locked despite the fact that unlocked averages 80?

 
Don't use Rivatuner, use the in game V-Sync option.
Not sure why you'd use third party software to limit an in application controlled issue.
Also depending on what hardware you're running, it may try to throttle itself to match the framerate lock, but this should be within a few fps margin of error generally.