Massive FPS increase with Resolution decrese (?)

[Shadylurker]

I was just curious why this is, I know in theory why, But is it known why this makes such a massive difference in this game?


EDIT: Whoa quick update i didnt enjoy playing windowed with 1024x768 so i changed the ini to almost full screen window, my fps full screen were 20 over water. with the only thing changed was window mode im over 100fps now in the same spot!

EDIT 2: Problem is fixed by forcing my GPU to max clocks. Game would not make my GPU move from it's idle clocks (300/300mhz) Now that my GPU runs at max clocks (925/1125) all the time the game runs great.

[Fuchs]

no multi thread support, overload for GPU, lot of possibilities...

[PE_Tigar]

That does look suspicious - I remember when the only way to run Il-2 in Win 7 Beta was to run it in windowed mode (with the window equal to the screen res).

[Anvilfolk]

Well, if you go from a resolution of 1920x1080 to 1600x900, you get 70% of the pixels you had originally. If you go down to 1280x720, you get only 44% of the pixels you had originally. The graphics card has to render all the pixels... if it has less than half of them, at least creating the image and sending it to the screen should be around twice as fast.

Of course there's all the computation that you need to do either way, but I think post processing effects are applied to every single pixel. Anti-aliasing and pixel shaders are some examples. The less pixels you have, the faster it goes.

Correct me if I'm wrong though.

I don't get why so many people complain. I don't think I've ever played a game with AA on, or pixel shaders on max. Or over 1280x720 for that matter. It's not that bad. People are complaining about not being able to have AAx8 or whatever it is, heh.

[Cpt.Badger]

Originally Posted by Anvilfolk

I don't get why so many people complain. I don't think I've ever played a game with AA on, or pixel shaders on max. Or over 1280x720 for that matter. It's not that bad. People are complaining about not being able to have AAx8 or whatever it is, heh.

On the serious side: if you haven't really played a game with AA, I strongly suggest you do, as it makes A LOT of difference.

And people are not complaining about not being able to have AAx8. People are complaining about not getting a playable FPS on high end rigs. That is a big difference.

[Oldschool61]

Originally Posted by Cpt.Badger

And people are not complaining about not being able to have AAx8. People are complaining about not getting a playable FPS on high end rigs. That is a big difference.

With HIGH resolutions. Having high resolution is in effect almost the same as having AA on. If you use one you dont really need the other. High res and AA both dramatically drop FPS so why use both if it makes game unplayable??

From Tomshardware
Game aliens vs Pred. Resolution 1680x1050
GPU HD6850 fps with 4XAA = 40.7 fps without AA= 63.6
GTX460 fps with 4XAA = 35.2 fps without AA= 58.6
GTX550Ti fps with 4XAA = 31.9 fps without AA= 49
As you can clearly see from the numbers above that by turning OFF AA you can have a significant boost in fps. Most gpus have nearly a 50% increase in fps by going from 4XAA to no AA.
Thats the same as in CLoD going from 20fps to 30 or more fps just from turning off AA. Imagine if you also lowered your resolution it might almost be playable now.

[666th_Lange]

Originally Posted by Anvilfolk

I don't get why so many people complain. I don't think I've ever played a game with AA on, or pixel shaders on max. Or over 1280x720 for that matter. It's not that bad. People are complaining about not being able to have AAx8 or whatever it is, heh.

It all depends on what you like or not. If i haven't have AA enabled then the screen shimmers like hell (even in the TrackIR screen i have AA enabled because otherwise it shimmers), so for me this is a must. But it's all perception and taste. I had a discussion a while ago around yes/no ClearType fonts. That's also an endless discussion about +/- the same thing. In the end it's mostly taste what drives people to make a certain visual setup work for them. And then there is a big difference between ATI and NVIDIA cards in this matter.

Originally Posted by maclean525

Modern games run on my rig at 5760x1080 with graphics on high and 4x anti-aliasing, 8x anisotropic filtering around 60fps no problems. Cliffs of Dover should be no exception. FSX, A10, Wings of Prey, Rise of Flight all run at that res with ZERO problems.

Well, just have a go at 5760x1080 with everyhing on HIGH in Cliffs Of Dover. Not in your life atm it will run with ZERO problems. Current hardware isn't just up for that yet to let Cliffs Of Dover perform that way. BTW, you can't even set any graphical improvement like AA, AS etc... COD dos not respond to those settings (yet).

[Anvilfolk]

Heh, those are good points, Badger and Lange. I guess I'm just used to playing games on low settings. But I've gotten the idea that people have been reluctant to lower their resolution, and fiddle instead with the other settings. Aren't most people still trying to run this at 1080?

I'd probably use AA if I had a computer that could handle it. What is this shimmering though? I don't think I understand. I might know what that is, but that's usually related to using non-standard resolutions, or a different aspect ratio "stretched" to your screen, so you should be able to get around it if it is indeed the case.

What mcmatt said makes a whole lot of sense. If you don't have enough memory on your graphics card, everything starts going much, much slower. It might just be that other games don't use as much memory, and so switching to a lower resolution doesn't have the same impact as going from needing too much memory to having enough memory. Just another guess...

[maclean525]

Modern games run on my rig at 5760x1080 with graphics on high and 4x anti-aliasing, 8x anisotropic filtering around 60fps no problems. Cliffs of Dover should be no exception. FSX, A10, Wings of Prey, Rise of Flight all run at that res with ZERO problems.

[FZG_Immel]

I noticed this too....

I can triple my FPS from FLL screen 1920x1080 to windowed 1280x720...


I understand the gain, by less pixel, but it should not be that much..

in DCS A-10C you gain 15% max by doing such a thing...