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Any software to manually adjust VSync caps?

M

metallicaband

Limp Gawd
Joined
Nov 3, 2007
Messages
489
I'm not talking about frame limiters, from my experience those don't fix tearing issues. Adaptive VSync isn't a solution as well even if I had an NV card since VSync is only enabled at certain frame rate ranges.

I'm trying to play LoL on my sad built it HD3000 since I still haven't gotten a dedicated GPU for my latest build (waiting for next gen Nvidia cards..), the game runs surprisingly well on 1080p considering it's only a built-in GPU.

Anyway, Whenever the FPS drops below 60, it immediately goes down to 30 which is very annoying, I'd like to set the frames with VSync at 40 or 45 fps. I'm guessing such software doesn't exist because Vsync can only operate at certain fps ranges, but if anyone knows about anything like this, whether it's freeware or paid, please let me know about it.
 
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VSync must drop to half, and then half again, of the refresh rate of the display if it can't maintain the refresh rate. That is the only way it can stay in sync with the display, which is what vsync is, which is what stops tearing.

To try to do otherwise would be like trying to sit at a piano and play a note between two of the keys. It just can't work.

What adaptive vsync does is try to accomplish some of what you're looking for and turn off vsync when you're below the refresh rate to allow you maximum possible FPS, thus preventing the tearing that occurs when you exceed your refresh rate but otherwise letting it float. Though of course you can't use it with your non-nVidia onboard video.
 
Thanks for replying, yeah I thought that how VSync works wouldn't allow such things.

It's been a while since I've played PC games, but I could almost swear that when I had my 6970 lightning some games would still run tear free below 60fps (e.g 40-55 range) without capping it @30fps while VSync is on, pretty sure Dragon Age 2 did that and Skyrim too. If anyone could explain why some games allow this would be great, unless I'm not remembering things right..
 
Triple buffering will work but it's going to introduce input lag which may or may not annoy you. I hate it. Setting a frame limit of 45 should fix your issue tho, even tho you said it doesn't work. Just make sure you set the limit below your refresh rate.
 
gmkmay said:
Triple buffering will work but it's going to introduce input lag which may or may not annoy you.
Click to expand...
I never found it noticeably worse than regular vsync, to be honest...

gmkmay said:
Setting a frame limit of 45 should fix your issue tho
Click to expand...
It won't. Every frame has to start right after a refresh, so every frame has to take a whole number of refresh intervals to complete. It can take one interval (60fps) or two intervals (30fps) or more, but never anything in between.
 
LuminaryJanitor said:
I never found it noticeably worse than regular vsync, to be honest...


It won't. Every frame has to start right after a refresh, so every frame has to take a whole number of refresh intervals to complete. It can take one interval (60fps) or two intervals (30fps) or more, but never anything in between.
Click to expand...

Some people don't notice the input lag (it's there tho and impossible to get rid of due to how triple buffering actually works) and some do.

You are right, the fps won't be directly linked to refresh, but it shouldn't tear. Tearing is caused by the frame input being higher than the refresh. Lower will technically induce very slight and mostly inconsequential judder, but it shouldn't tear.
 
gmkmay said:
Some people don't notice the input lag (it's there tho and impossible to get rid of due to how triple buffering actually works) and some do.
Click to expand...
It's there, but it's there with double-buffered vsync as well. If you can deal with the lag from regular vsync, you can probably deal with the lag from triple buffering.

gmkmay said:
Tearing is caused by the frame input being higher than the refresh.
Click to expand...
Tearing is caused by buffer flips coinciding with frame transmissions to the monitor. If you're not explicitly synchronising the buffer flip with the monitor refresh, there's always a chance of a tear.
 
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