hedge-dev
VSync causes significant performance loss
Validation
- [x] I have checked the Issues page to see if my problem has already been reported
- [Irrelevant] I have confirmed that this bug does not occur in the original game running on original Xbox 360 hardware
Describe the Bug
In some areas, enabling VSync causes about a 25-30 FPS drop, testing with ShowFPS enabled.
Steps to Reproduce
Steps to reproduce the bug:
- Enable VSync
- All my frames gone ):
Expected Behavior
VSync shouldn't do that
Footage
VSync enabled:
VSync disabled:
Specifications
Fill out the following details:
- CPU: AMD Ryzen 7 3700X
- GPU: NVIDIA RTX 2070 Super
- GPU Driver: NVIDIA driver 565.77
- OS: NixOS 25.05 (Linux)
- Version: 1.0.0
If I were to guess I'd say this is NVIDIA and Linux exclusive, otherwise I would have expected someone else to open an issue by now.
Also, this is anecdotal, but the framerate seems to be even lower than what's reported with VSync on, which is why I think I managed to catch this.
I mean, Nvidia's vsync implementation on Linux has been abysmal from the start. This might as well be a driver issue.
I guess that's what they get for not using libVA unlike all sane linux gpu driver devs.
this happens to me too i'm on windows 11 with a intel iris xe gpu i'm easly able to run the game at near 60 with vsync off, but when i turn it on my fps is capped at 30 if i had to guess this might have something to do with the triple buffering feature.
from my experience on a game like left4dead triple buffering enabled allows the game to run with vsync on at whatever refresh rate your monitor has (in my case 60hz) but when triple buffering is off it's stuck on 30
the unleashedrecomp has an option for triple buffering on it's config file, however i've tried everything i could think of ("enabled", "true", "on", etc) but i can't get it to be "on" it always resets to auto
it kinda sucks that i can't play with vsync on without it capping my fps to 30, i really hate screen tearing, having vsync off is out of the question for me
@KayLilac, I managed to get it to run at 60fps with vsync on, but you have to disable fullscreen mode.
Oh, the issue is vulkan then
now that you mention it... you're right!! it doesn't happen on directx12! wth XDDDD i've been playing this whole time on vulkan cuz i don't wanna get a seizure playing on directx12, i thought this would happen there too, but no, that's so weird
@KayLilac, I managed to get it to run at 60fps with vsync on, but you have to disable fullscreen mode.
yeah, i can achieve the same but only when the window is super small, when it's on my native resolution (1080p) it plummets down to 30 btw what @EternallyEmber said there is right, this happens on vulkan, i tested on directx12 and my fps remained normal with vsync on
@shad3w2 , using the Windows key + R and paste: %APPDATA%\UnleashedRecomp
Once you are in the game folder, look for the "config" file, scroll down until you find the video settings and in GraphicsAPI change "Auto" to "D3D12"
@shad3w2 Hmmm, sorry, I wouldn't know what to do in that case, it could be something with your GPU that happens specifically with D3D12
Hi, this is My experiencia to share: I tried all 3 types of GraphicsAPI and the one that worked best for me in terms of performance was DirectX12, but that didn't solve the fps drop with vsync activated, after DirectX12 I used D3D12, and it was the best one that helped me activate vsync without any problem, the problem with this one is that it has a lot of texture glitches when using it, which I don't know why, if anyone has information to share it would be amazing if they shared it to try to get the best experience in this game
Another problem I found is that when using DirectX12 after closing the app in the config.toml file it automatically changes to "Auto" I don't know if anyone has solved this.
Hi, I've already investigated more and from what I can understand, D3D12 gives many texture problems in the game (so it's something from the port that we just have to wait for them to fix)
this happens to me too i'm on windows 11 with a intel iris xe gpu i'm easly able to run the game at near 60 with vsync off, but when i turn it on my fps is capped at 30 if i had to guess this might have something to do with the triple buffering feature.
from my experience on a game like left4dead triple buffering enabled allows the game to run with vsync on at whatever refresh rate your monitor has (in my case 60hz) but when triple buffering is off it's stuck on 30
the unleashedrecomp has an option for triple buffering on it's config file, however i've tried everything i could think of ("enabled", "true", "on", etc) but i can't get it to be "on" it always resets to auto
it kinda sucks that i can't play with vsync on without it capping my fps to 30, i really hate screen tearing, having vsync off is out of the question for me
i can't believe it took this long... but hey! better late than never i guess
i managed to turn on triple buffering on vulkan and fix the problem turns out on the config file in order for the triple buffering to take effect you need to set it to on BUT the o need to be capital so basically = On
if it's not a capital O it will reset to auto
now vulkan can finally have the glory of no screen tearing and high frames
but seriously tho, why does the game not use triple buffering as default for vulkan? why does only dirextx12 gets that treatment? this is so freaking stupid a stupid fix, for a stupid problem
Triple buffering only gets enabled for Vulkan on Auto if Present Wait is supported, you can see if it is from F1 profiler window.
Triple buffering only gets enabled for Vulkan on Auto if Present Wait is supported, you can see if it is from F1 profiler window.
ah, i see! well, i can confirm here looking at the profiler info, it says present wait is "unsupported" however after i enabled tripple buffering through the config file it definitely seems to have worked, my frame rate is no longer capped at 30 on vulkan with vsync. honestly? i'm pretty lost XDDD