Fast V-Sync not working in Deus Ex Mankind Divided?

[RejZoR]

Just tried continue playing this game and despite having Fast V-Sync enabled, I was getting horrible image tearing all over the place.

I was using DX12 and exclusive full screen mode at 144Hz. Is it possible that Fast V-Sync doesn't even work in DX12 games? That's crappy...

Why is NVIDIA investing all of it into DX11 where DX12 is neglected with nonsense like this?

 

[qubit]

It will probably get fixed in time. The fault might actually be the game itself.

I've noticed that FastSync does have unwanted side effects with some games and can actually look worse than regular vsync in those cases.

 

[the54thvoid]

You have an Nvidia card, so play in DX11. DX12 offers no visual improvement so why would you even bother?
If you had a recent GCN based AMD card, playing in DX12 makes sense as you know it elevates the Async properties better.
But again, DX12 isn't visually any better and unfortunately most games that have implemented it have had less than perfect implementations.

 

[RejZoR]

One would expect Pascal cards to utilize Async better than older GeForce cards so DX12 still makes sense.

I wonder if AMD's Enhanced Sync is also this glitchy...

 

[the54thvoid]

One would expect Pascal cards to utilize Async better than older GeForce cards so DX12 still makes sense.

I wonder if AMD's Enhanced Sync is also this glitchy...

Well, remember it was an AMD title, so much so some game logos look like the AMD logo. If a game is made by NVIDIA, people cry Game works so it's not out of the question to suggest AMD codesigned titles (Dirt Rally is a biggie for benchmarks) don't give Nvidia hardware the best light.
Pascal should uplift only marginally over Maxwell on DX12 unless the DX11 implementation was very well optimized.

 

[RejZoR]

Any info if Fast V-Sync doesn't even work with DX12 and Vulkan?

 

[rtwjunkie]

Pascal should uplift only marginally over Maxwell on DX12 unless the DX11 implementation was very well optimized

Which it apparently it is well-implemented. DX11 runs beautifully. Like you said, no reason to run this game in DX12 (which was a patch), other than to be able to say it was played on DX12.

 

[ZeppMan217]

One would expect Pascal cards to utilize Async better than older GeForce cards so DX12 still makes sense.

I wonder if AMD's Enhanced Sync is also this glitchy...

You'd see no performance nor visual difference between DX11 and DX12 versions with your specs. Just use DX11. DXMD is not likely to get any more patches anyway.

 

[cucker tarlson]

this game is bad in dx12 mode on nvidia and amd, and I don't think it even utilizes async at all. nonsense is releasing broken ass dx12 games instead of perfectly working dx11 ones.

 

[Vayra86]

I am getting the sense that Fast Sync can produce frametime problems depending on how the game engine uses pre-rendered frames. You may want to play with that setting and see how Fast Sync responds to different amounts of pre-rendered frames. Higher amounts will screw it over in my experience, set it to 1-2 and it improves.

Otherwise, adaptive Vsync, or fps cap it. Works 100% of the time, virtually similar in game experience.

 

[cucker tarlson]

why are you even using fast-sync in mankind divided ? this works best at 150 fps and higher.

 

[RejZoR]

I don't know, because of image tearing maybe?

 

[cucker tarlson]

Sorry I didn't realize you're still using fixed refresh.
Like the others said, use dx11 and adaptive vsync, this should produce higher and more stable framerate.

 

[RejZoR]

Just because it says "Adaptive" in the name, that doesn't mean refresh is not still fixed. It's just not on till it hits 144fps. The reason why Fast V-Sync is preferred is because every frame hits the screen in full on every refresh. After 144 fps, it's just dropping them all. Absolutely zero tearing no matter the framerate.

 

[phanbuey]

Just tried continue playing this game and despite having Fast V-Sync enabled, I was getting horrible image tearing all over the place.

I was using DX12 and exclusive full screen mode at 144Hz. Is it possible that Fast V-Sync doesn't even work in DX12 games? That's crappy...

Why is NVIDIA investing all of it into DX11 where DX12 is neglected with nonsense like this?

this game is super buggy with the texture loads too... you will notice it stutters at the same points always.

 

[RejZoR]

It stutters horrendously on level start and becomes smoother over some time, even though I have 32GB of RAM and 11GB of VRAM. I wasn't getting that with a 4GB graphic card... So weird...

 

[Vayra86]

It stutters horrendously on level start and becomes smoother over some time, even though I have 32GB of RAM and 11GB of VRAM. I wasn't getting that with a 4GB graphic card... So weird...

Still trying Fast Sync, or have you gotten wise and does it stutter anyway?

 

[RejZoR]

It's not a stutter like dropped frames, it's literally stutter with half a second pauses as you rotate around your own axis.

 

[the54thvoid]

I have the game and the same gfx card (though 60hz, 1440p monitor). I could re-instal and test to see if i get the same. I have a feeling though the refresh difference wont help. TBH, I dont see stutter in other games (fps is too high) so it may well be the game engine not liking Nvidia as much as AMD.

 

[Vayra86]

Just because it says "Adaptive" in the name, that doesn't mean refresh is not still fixed. It's just not on till it hits 144fps. The reason why Fast V-Sync is preferred is because every frame hits the screen in full on every refresh. After 144 fps, it's just dropping them all. Absolutely zero tearing no matter the framerate.

No, the reason Fast Sync is preferred is because it is Adaptive Vsync without the input lag penalty. It was implemented primarily for games like CS:GO and the like.

 

[Nokiron]

It stutters horrendously on level start and becomes smoother over some time, even though I have 32GB of RAM and 11GB of VRAM. I wasn't getting that with a 4GB graphic card... So weird...

1080 Ti, 32GB RAM and a 5960X. I do not have that problem.

What is a problem though, is that Deus Ex runs like hot garbage in DX12 on both AMD and Nvidia.

 

[RejZoR]

No, the reason Fast Sync is preferred is because it is Adaptive Vsync without the input lag penalty. It was implemented primarily for games like CS:GO and the like.

They are not the same because they work in a different way...

 

[Vayra86]

They are not the same because they work in a different way...

Correct and you're applying this Vsync in the wrong situation but this does not seem to sink in yet. Does your FPS constantly remain higher than the refresh rate of your monitor and above 100 hz/fps? If it drops under, you should not be Fast Syncing because it will create more frame time variance than it solves.

I see lots of threads like this where people somehow mistakenly consider Fast Sync a 'better Vsync' while in reality it is meant for a very specific purpose: to eliminate screen tear at HIGH REFRESH, with even HIGHER FPS generated by the GPU, while not incurring the input lag penalty of Vsync. SPECIFICALLY to cater to the growing E-sports crowd. It serves to eliminate the use of an FPS cap to maintain low input lag, because this is not ideal and tear-free.

Now, back to topic: Deus Ex and competitive/E sporty of nature? No? Good, so use another Vsync method - or just keep complaining you see stutter when applying the wrong setting in NVCP

 

[RejZoR]

Fast V-Sync eliminates tearing at any framerate. And considering I'm running a GTX 1080Ti at 1080p, what do you think my framerates are like?

 

[Vayra86]

http://www.guru3d.com/articles-pages/geforce-gtx-1080-ti-review,17.html

You're not getting an FPS that is consistently way higher than your monitor refresh. When you dip under, you add frame time variance because the GPU will give you the closest buffered frame.

Again - this is exactly the misunderstanding I was referring to. People think 'zomg over 100 fps quick enable Fast Sync' but this is not how it works.

- 60hz monitor + 100-120 ingame fps? = Fast Sync will work OK
- 144hz monitor + 120 ingame fps? = Fast Sync is useless and counterproductive
- 144hz monitor + 200+ ingame fps? = perfect situation for Fast Sync