My FPS is locked at 60 in Minecraft (Vsync)

Question

I have a problem with Minecraft, when I switch to fullscreen, vertical sync activates by itself and I can't get over 60 fps, yet in windowed mode everything works fine, I easily reach 200 fps. I've tried a lot of techniques, I’ve disabled vertical sync and checked everything in the options, but nothing works. My screen is 60 Hz, but it's strange, I can still see the difference when I have vertical sync on, I feel like my movements are slowed down. Also, here are my specs:

Intel Core i5 2.8GHz
8GB RAM
Windows 10
Storage: 500 MB (2 drives 1/2 full)

There you go :( it's quite frustrating because I can't play normally, I think it's because my drive is almost full (13GB left) anyway help me please :( I've been looking for 4 days.

TheLegendC15 · Answer

Vertical sync should be able to be disabled and free up graphics memory even in fullscreen. If you're still running at 60 fps, that's not normal; you should reinstall the game.

For your storage issue, a simple cleanup of your files (duplicates and unnecessary files, etc.) can free up quite a bit of space. Then you need to check how much RAM is allocated to Minecraft and how much you're actually using. To do that, press F3 and look at the top right.

You can download Optifine to access more graphical settings in Minecraft.

After that, it could also be an issue with your graphics card and its drivers. What is your model?

ElementW · Answer

'lut
VSync in fullscreen can be disabled, but it is not advisable because...

your screen cannot (materially) display more than 60 frames per second

Only specific gaming PC monitors can go above this (e.g., 120 FPS), and if yours could, then VSync would limit you to more than 60 FPS.

Disabling VSync often proves unnecessary because since the screen is limited in refresh rate, your graphics card and processor will be used more (-> generates more heat) and you will encounter graphical artifacts on the screen: tearing (visual example), and no more fluidity. See this hardware.fr thread for more explanations.

The 60 FPS limit in fullscreen is imposed by your graphics driver: it prevents Minecraft from starting to draw the next frame before it's time.

As for windowed mode, you can go "above" 60 FPS because Minecraft does not handle VSync notifications since the VSync option is disabled. And since it's not in fullscreen (with display exclusivity), the graphics driver does not prevent it from starting to draw the next frame as soon as it finishes the previous one. However, it still shows up at 60 FPS in the end since in windowed mode, it's the Windows desktop compositor (

dwm.exe

) that tells the graphics card what to display! And that one is limited to 60 frames per second; even though it receives more frames from Minecraft, it will only choose one every 1/60th of a second.
from human import idiocy
del idiocy

TheLegendC15 · Answer

Well, every time I enable vertical sync, the game lags a lot, so if it doesn't affect VRAM, I would like to know where it comes from. I'm getting between 30 and 50 FPS depending on the environments, and as soon as I enable Vsync, I have insane drops, even freezes.

I've had tearing issues in other games before, albeit mild and temporary, but this time, activating Vsync is a disaster, going from 40 to 20 FPS and it still feels slow with stutters. Are you sure Vsync doesn't influence VRAM? Since it requires the graphics card to perform an additional processing task, that seems a bit illogical to me...

My FPS is locked at 60 in Minecraft (Vsync)

3 réponses

your screen cannot (materially) display more than 60 frames per second

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