I got my FPS back!

[Giovaneveterano]

Short story: ACC used to run crappy on my senior PC, now it doesn't. I'm not gonna explain a thing because it's all well written here in plain english: https://docs.unrealengine.com/en-US/Engine/Performance/Scalability/ScalabilityReference/index.html

You need to see hidden folders for this path:
C:\Users\USERNAME\AppData\Local\AC2\Saved\Config\WindowsNoEditor\Engine.ini

Copy and paste this in the very bottom, thanks for the beer.

[ConsoleVariables] r.AmbientOcclusionLevels=1 r.DistanceFieldAO=0 r.HZBOcclusion=0 r.LensFlareQuality=0 r.SceneColorFringeQuality=0 r.DepthOfFieldQuality=0 r.SSR=0 r.TranslucencyLightingVolumeDim=24 r.DetailMode=0 r.Shadow.CSM.MaxCascades=1 r.AllowLandscapeShadows=0 r.DistanceFieldShadowing=0

Spoiler: BENCHMARK COMPARISON

1 lap at MISANO, SUNSET

DEFAULT: Avg: 56.9 - Min: 43 - Max: 70
MODDED: Avg: 62.3 - Min: 46 - Max: 78
FPS Diff.: Avg: +5.4 - Min: +3 - Max: +8

Thanks @2stains for the AO suggestion.

 

[DrRob]

I have been using these in the engine.ini file with great sucess not sure where i found them :

[ConsoleVariables]
r.TemporalAACatmullRom=1
r.TemporalAAPauseCorrect=1
r.TemporalAASamples=4
r.Tonemapper.Sharpen=4
vr.PixelDensity=1.4
r.SeparateTranslucency=0
r.HZBOcclusion=0
r.MotionBlurQuality=0
r.PostProcessAAQuality=4
r.BloomQuality=0
r.EyeAdaptationQuality=0
r.AmbientOcclusionLevels=0
r.SSR.Quality=1
r.DepthOfFieldQuality=0
r.SceneColorFormat=3
r.TranslucencyVolumeBlur=0
r.TranslucencyLightingVolumeDim=48
r.LensFlareQuality=0
r.SceneColorFringeQuality=0
r.FastBlurThreshold=0
r.SSR.MaxRoughness=0.1
r.RHICmdBypass=0
r.DetailMode=1
r.RefractionQuality=2
r.MaterialQualityLevel=1
sg.ShadowQuality=2

Did you gain FPS, what are the downsides? Can you elaborate a bit? Cheers.

 

[2stains]

Cheers for sharing. Will try on my ultrawide 1080p setup, especially the engine.ini.

Can you share your thoughts on:

• What is your reason for going to 105% supersampling? I always had the impression the bottleneck is the resolution of the monitor (pixel density), so it will remain blocky no matter what you set supersampling to.
• Is there a reason you prefer foliage set to epic compared to view distance, mirror view distance and opponents visibility set to quite mid/low settings?

Thanks again.

With the resolution scale, I came from a 4k monitor at 85% res scale, it was still crisp, now on 1080p's its noticeably more blurry and if i put res scale to 150 it looks crisper than 4k at 85%. 105 looks cleaner than 100 so I've just raised it as far as my GPU will allow. As for blocky at 1080p, I believe it's UE4 or something in ACC because there is a huge difference in clarity going to any other Sim, AC for instance looks really nice and crisp at 1080p (I was surprised that oming from 4k).
My biggest issue is CPU limitation, I've lowered all settings that seem to create the CPU bottleneck and just left settings that I didn't notice performance issues. Mirrors are the thing that I need to turn completely off let alone have any higher settings. I've played with what settings make it so i cant even run mirrors and view distance weirdly and opponents seem to be both CPU dependant. And I definitely had to turn mirrors off before running that Engine.ini.

 

[DrRob]

Thanks @2stains . I tried res scale 105% just now and it is really noticeable sharper at the cost of a few FPS. Thanks again!

 

[2stains]

Thanks @2stains . I tried res scale 105% just now and it is really noticeable sharper at the cost of a few FPS. Thanks again!

Cool man, it's on the GPU side also so for me I find it easier to loose a few fps on GPU than on CPU it's harder to make up.

 

[Stepy]

Did you gain FPS, what are the downsides? Can you elaborate a bit? Cheers.

As i use Vsync i didn`t gain any FPS, but its At 60 for the most part no micro stutters (3840 x 2160) Starting at the back off the grid with 19 AI at Laguna Seca it was around 56. My advice is just try it if it doesn`t help then remove it. I also followed this guide the best i could :

 

[DrRob]

Cool man, it's on the GPU side also so for me I find it easier to loose a few fps on GPU than on CPU it's harder to make up.

Tried your engine.ini. Really a good one! Same FPS as before, but without having to disable rain.
Cheers mate!

 

[Peter Klawitter]

has anyone found any settings for running triples @7680x1440p? successfully in ACC?

 

[Alex72]

Are you struggling with an i7 and a RTX 2070!?
Woah, that's sad.

With triple screen, yes. rF2 on max bascially and the CPU and GPU is calm and cold (looks pretty damn good now too). ACC i run medium/low and the GPU is screaming hot and FPS struggling.

Im going to test this threads settings though and see.

 

[mkel1966]

Thank you guys for sharing. I thought I never had a chance to play this sim decently on my pc. I really appreciate this.

 

[Pappa_G_27]

Cool man, it's on the GPU side also so for me I find it easier to loose a few fps on GPU than on CPU it's harder to make up.

Any tips on what settings are most CPU intensive?

Struggling a bit with my i5 7500. Have a gtx1080 running at 60%, but still getting stutters of FPS below 60 with vsync on. Vsync off getting 100 FPS but mass tearing, so it is a bit strange.

I am guessing vsync is using up some CPU as well?

 

[2stains]

Any tips on what settings are most CPU intensive?

Struggling a bit with my i5 7500. Have a gtx1080 running at 60%, but still getting stutters of FPS below 60 with vsync on. Vsync off getting 100 FPS but mass tearing, so it is a bit strange.

I am guessing vsync is using up some CPU as well?

Shadows , visible cars and mirrors ! Definitely turn OFF mirrors and reduce visible Ai ! But im not sure how much luck you ar going to have with only 4c no HT !

 

[RasmusP]

Any tips on what settings are most CPU intensive?

Struggling a bit with my i5 7500. Have a gtx1080 running at 60%, but still getting stutters of FPS below 60 with vsync on. Vsync off getting 100 FPS but mass tearing, so it is a bit strange.

I am guessing vsync is using up some CPU as well?

A general "rule of thumb" for CPU intensive settings is whether or not they use "actual geometry".
So as 2stains wrote:
- shadows: they are true calculated shadows of objects so definitely use the cpu
- visible cars: obviously geometric
- mirrors: also definitely geometric
- reflections (only a separate setting in AC): also based on true geometrics

In AC there is the "world detail" settings, which is also CPU intensive.

In ACC it's a bit more complicated sadly...

What's NOT cpu intensive:
- resolution
- Anti Aliasing
- post processing (mostly)
- sharpening
- fog
- bloom
- motion blur

This leaves these to test:
- mirror distance
- material quality
- mirror resolution (shouldn't make a difference. Either the draw calls are there or not. So on/off and the distance should be CPU intensive, the resolution should NOT be
- foliage LOD (distance/quality)
- LOD in general
- view distance
- effects

To test these:
- deactivate vsync
- activate an fps counter
- make sure your gpu load isn't above 90%

- see what settings give an fps boost

 

[Pappa_G_27]

Cheers @RasmusP and @2stains

Tried a few things and mirrors off helps increase FPS by a good 10-20FPS. Shadows off as well helps. Everything else didn't make a noticeable difference.

One thing though i find strange is that i can easily hold 110-120FPS without vsync, so i'd expect stable vsync, but with vsync on i get every so often frame drops below 60. Any idea why this would be the case?

I guess my options are run with vsync off and handle some of the stutters and tearing, or use adaptive vsync to help stabilise at the odd times it drops below. Or work on the wife to allow me to get a new processor!

*Note i'm using triple screen setup 5760x1080

 

[RasmusP]

Cheers @RasmusP and @2stains

Tried a few things and mirrors off helps increase FPS by a good 10-20FPS. Shadows off as well helps. Everything else didn't make a noticeable difference.

One thing though i find strange is that i can easily hold 110-120FPS without vsync, so i'd expect stable vsync, but with vsync on i get every so often frame drops below 60. Any idea why this would be the case?

I guess my options are run with vsync off and handle some of the stutters and tearing, or use adaptive vsync to help stabilise at the odd times it drops below. Or work on the wife to allow me to get a new processor!

*Note i'm using triple screen setup 5760x1080

Many times I've had the same issue. Holding 70+ fps without a single drop even when I put MSI Afterburner to 100ms update rate and checked the frametime.
Enabling vsync and I had drops to 58 fps and microstuttering...

At one point I had enough and wanted a better monitor anyway so I splashed out to a g-sync monitor.
Limiting the fps to 60 still makes them drop to 58 or something frequently but now I don't notice these drops anymore.

 

[Demithio]

Whatever this does, it uses about 20-30% less GPU, and subsequently increases high FPS frame stability. Theres always a trade off though. image quality is suffering somewhere.

 

[2stains]

Cheers @RasmusP and @2stains

Tried a few things and mirrors off helps increase FPS by a good 10-20FPS. Shadows off as well helps. Everything else didn't make a noticeable difference.

One thing though i find strange is that i can easily hold 110-120FPS without vsync, so i'd expect stable vsync, but with vsync on i get every so often frame drops below 60. Any idea why this would be the case?

I guess my options are run with vsync off and handle some of the stutters and tearing, or use adaptive vsync to help stabilise at the odd times it drops below. Or work on the wife to allow me to get a new processor!

*Note i'm using triple screen setup 5760x1080

Try the 61.8 fps framerate limit in nVidia inspector! I found that to eliminate tearing and give no tearing! Even better than vsync and framerate limit in game or RTSS.

 

[Pappa_G_27]

Try the 61.8 fps framerate limit in nVidia inspector! I found that to eliminate tearing and give no tearing! Even better than vsync and framerate limit in game or RTSS.

hmmm cant seem to get this to stick in nvidia inspector. keeps turning off!

 

[Pappa_G_27]

Yeh how do you set a decimal framerate limit in it? Seems to only allow me to select full numbers from the list

 

[Alex72]

Do we need to set readonly on the Engine.ini file?

Also with RTX2070 and i7-8700K i wonder if i can up some of the engine.ini tweaks to get a bit better graphics but still good FPS. Maybe someone with triples using these engine.ini files have some tips? Cheers.

 

[Peter Eckhardt]

I cant se any big difference with these setting but i am able to go to Epic shadows which costs normaly 10 fps .
In the Nvidia Panel setting the texture filtering set to quality costing massive fps . What are your settings ?