VSync 30 FPS Problem

[M05K]

Hello everyone!

I have a Vsync problem, I had been playing L4D2 with the VSync ON in-game options and sometimes my FPS drops to 30 FPS I don't know why, in the other day everything was OK! I searched in the internet and they said to use the RadeonPro VSync it's better than the in-game one. That 30 FPS problem it's related to the GPU or it's like the VSync works?

Thank you

 

[RaDiKaL_]

VSync (at least on AMD cards) will try to sustain the following frames: 144,120,100,85,75,72,70,60,30,15.

So if your CPU/GPU are delivering 60-65fps VSync will lock it to 60hz, but the moment you get 59fps Vsync will lower it down to 30, if you get 29fps you'll drop to 15hz, that's the inconvenience with VSync, G-Adaptive makes a much better work but for the moment only Nvidia has that feature.

 

[M05K]

There's any way to fix this? I didn't had this problem in the other day, it's happening now, i think I will try to reinstall the drivers