A possible solution to FPS and stutter probs for NVidia users

[msalama]

"irregular stutters" are usually file loadings.

 

Just to clarify, I was referring to constant microstuttering that is not cyclic by nature. And that definitely isn't caused by the sim accessing the disk.

[msalama]

So what we're talking about here is tradeoffs. If I run the sim at 30 f/s and sync everything to that, then yeah, what I'm seeing down low when looking to the side is cyclical terrain judder caused by the lowish framerate. But if I run the sim with too high an FPS - or one that isn't a quotient of the screen refresh rate - I get constant microstuttering which is irregular (i.e. non-cyclical) by nature, because I hit all kinds of bottlenecks in the rendering chain all the time. But them's the breaks, huh?

 

My choice is to run at 30 f/s, because that ensures a smooth experience apart from the judder/flicker issue. Yours may well be different and that's cool too, more power to ya :thumbup:

[Wolf Rider]

May I ask what monitor it is you are running?

[msalama]

May I ask what monitor it is you are running?

 

An Acer G245HQ I just bought a couple of weeks ago.

[Wolf Rider]

CCFL backlight?

 

anything under 50/ 60fps will be seen as flickering (stuttering/ juddering)... you might be able to minimise it, but never be free of it unless you can match exactly, your fps to your local mains power frequency (50 or 60 Hz) and the CCFL is designed for your locale.

Edited February 5, 2013 by Wolf Rider

[Lange_666]

which goes back to my point of (old movie reel) terrain flicker.

A smooth cockpit maybe one thing, but the terrain is seen to flicker from that smooth cockpit...

It s not a matter of 'well don't look at it then :) '... its there it can be seen

 

100% agree with you.

In my case, i found it horrible too to lock the FPS at 30 instead of the usual 60 i was used to with DCS: A-10C stand alone version. But with DCS: World i couldn't keep that figure up so it was either going down to 30 and keep it there (in a highly rich environment it will still dive under 30) and take the motionstutter for granted or lock it at 60 and have the sim constantly dive under that figure causing a lot more viewable stutter.

In the beginning i was constantly switching back and forth between the 2 settings but the trade-off is less when set at 30 so i finally locked it to 30 and didn't look back (although i'm gonna give it a shot when 1.2.3. comes out). After a while, you notice it less and less and now i only see this stuttering due to the low refreshrate when i pay attention to it. I can live it it, for now.

It was either that or not flying at all.

[Wolf Rider]

@ Lange...

 

Fair enough

I'm a bit different different... with the terrain the way it is like that, I find that very very distracting (almost like something distracting in the corner of the eye, in real life - a foot jiggler for instance) whereas a straight fps drop, this end, can be lived with. With my system, the dive isn't that bad (except when the bombs drop and pop, or when looking around some airbases but not so much when landing, and well, tending not to land at the real bad bases)

 

At least we both accept the limitations, albeit at different directions.

Edited February 5, 2013 by Wolf Rider

[msalama]

motionstutter

Ah, now THAT'S the word I've been looking for. Irregular but constant motion stuttering is exactly the thing doing my head in when running DCSW at 60 FPS, whereas everything locked to the majical 30 only gives me said low framerate induced regular (cyclical?) terrain juddering, and that I can totally live with. Different strokes for different folks, eh?

 

But I'm sure we can still agree on ED needing to optimize the bugger like yesterday, do we not ;)

[doveman]

5) NVI vertical sync = 1/2 refresh rate * IMPORTANT - gotta have this for smooth operation at 30FPS*

 

I guess us ATI users can use Radeon Pro's Double Vsync option to do this. Do you disable Vsync in-game?

[msalama]

Do you disable Vsync in-game?

 

Yes.

[msalama]

regular (cyclical?) terrain juddering

 

Oh, and a wee comment on my comment on this still if you allow :) Namely I just noticed yesterday that even this seems to be location-dependent, i.e. it's worse over big urban areas and almost unnoticeable when you're out in the sticks - and also completely disappears when you go higher. So I don't know, I still rather live with this small judder than suffer from constant irregular motion stutter, which REALLY really annoys me to no end...

[doveman]

Yes.

 

Thanks, I'll give that a go then.

[doveman]

Strange as it may sound, the microstutters are back if I put MaxFPS to zero. This may be because the sim then produces more f/s than 30 and thus creates a bottleneck by somehow "pushing" against the driver's 1/2 refresh rate limit, I don't know? Hmmm...

 

I don't think it's that strange. If the sim is still producing varying framerates, say 30-50 and just the driver is limiting how many are actually seen via double-vsync then I guess in the background the fps being generated is still jumping up and down, which then causes the microstutters for whatever reason, whereas if the engine is also limited to not producing more than 30fps, this wide variance doesn't happen at any point.

[msalama]

Sounds plausible Doveman :)