5120x 1440, 120hz - 3080TI

[no_frills00]

Hey All,
Sorry if this has been discussed elsewhere, i couldnt quite find what i was looking for.

I recently upgraded my GPU to a 3080Ti, with the hopes of reaching 120fps in Assetto Corsa Competizione , running on my Samsung CRG90 (5120x1440 120hz).

I can't quite manage to find any way to get the Frame rates remotely close to a stable 120fps.
And it honestly doesn't seem like much of an improvement from my old 2070 Super.
Could this potentially be a CPU issue ?

Does anyone else have a 3080TI running at this same resolution and frame rate target? If so - Any ideas?

 

[Durge Driven]

Run vanilla benchmark test as baseline

All I can offer is 2080 to 3080 is big jump in sims I have used ( more fps and jumped from 2560 to 3440) but I have not run AC since I got new card so no help.

 

[Deleted member 197115]

Hey All,
Sorry if this has been discussed elsewhere, i couldnt quite find what i was looking for.

I recently upgraded my GPU to a 3080Ti, with the hopes of reaching 120fps in Assetto Corsa Competizione , running on my Samsung CRG90 (5120x1440 120hz).

I can't quite manage to find any way to get the Frame rates remotely close to a stable 120fps.
And it honestly doesn't seem like much of an improvement from my old 2070 Super.
Could this potentially be a CPU issue ?

Does anyone else have a 3080TI running at this same resolution and frame rate target? If so - Any ideas?

I have this monitor and card with i9-9900K (OC 5HGz). My framerate is about 90fps at the start of the race and can go up to 140 after opponents spread out on some tracks. All settings on Epic except Shadows on High as they are quite expensive and can cost around 10fps, also enabled HDR and FSR sharpening.
Are you using triple screen rendering by any chance, that one can eat a lot of fps?
My settings

 

[RasmusP]

- open Taskmanager
- go into the performance section and click on the gpu to see the loads/usage as graphs

- drive a bit with settings where you think the FPS should be higher

- pause the session
- check the graphics card load in the Taskmanager graphs

- if it was at 95% or fully at 100%, your graphics card is the limit

- if it's not close to 100%, your cpu is the limit

Note: you can't see a CPU limit since acc won't use all your cores.
If you see all cores being used to some extend, that's due to windows shuffling the application threads of acc around over all cores to enhance the performance.
You see an average of 1 second, which has all cores showing some usage.

Looking at the graphics card load is the only way I know to check gpu vs cpu bottleneck.

Note2: "cpu bottleneck" can also mean ram speed/latency bottleneck or some bandwidth bottleneck somewhere but a faster cpu helps in 99% of the cases there, so "cpu bottleneck" is a good summary for this.

 

[no_frills00]

Thanks Guys!
Really appreciate the help, i'll try these over the next few days

 

[no_frills00]

I have this monitor and card with i9-9900K (OC 5HGz). My framerate is about 90fps at the start of the race and can go up to 140 after opponents spread out on some tracks. All settings on Epic except Shadows on High as they are quite expensive and can cost around 10fps, also enabled HDR and FSR sharpening.
Are you using triple screen rendering by any chance, that one can eat a lot of fps?
My settings

You wouldn't happen to know where those JSON files are kept would you?

 

[no_frills00]

I

- open Taskmanager
- go into the performance section and click on the gpu to see the loads/usage as graphs

- drive a bit with settings where you think the FPS should be higher

- pause the session
- check the graphics card load in the Taskmanager graphs

- if it was at 95% or fully at 100%, your graphics card is the limit

- if it's not close to 100%, your cpu is the limit

Note: you can't see a CPU limit since acc won't use all your cores.
If you see all cores being used to some extend, that's due to windows shuffling the application threads of acc around over all cores to enhance the performance.
You see an average of 1 second, which has all cores showing some usage.

Looking at the graphics card load is the only way I know to check gpu vs cpu bottleneck.

Note2: "cpu bottleneck" can also mean ram speed/latency bottleneck or some bandwidth bottleneck somewhere but a faster cpu helps in 99% of the cases there, so "cpu bottleneck" is a good summary for this.

I think you are right.
I just loaded a session and checked the stats, my CPU was at 100% whereas my GPU was around 60% at the time.
so it looks like my CPU might be the problem.
I have an i5 9600k @3.7, i might need something beefier.

 

[Skyraker]

I am running a 5760x1080 triple.
With a combination of high and ultra setting i get 80fps with a Intel 11400F and a 3080ti.
i dont think that 120fps at high / epic settings are possible with your resolution.
I´m interessed in how a newer CPU pushes you forward.

 

[Deleted member 197115]

I am running a 5760x1080 triple.
With a combination of high and ultra setting i get 80fps with a Intel 11400F and a 3080ti.
i dont think that 120fps at high / epic settings are possible with your resolution.
I´m interessed in how a newer CPU pushes you forward.

ACC in house triples implementation adds lots of overhead.

 

[EekAGiraffe]

I

I think you are right.
I just loaded a session and checked the stats, my CPU was at 100% whereas my GPU was around 60% at the time.
so it looks like my CPU might be the problem.
I have an i5 9600k @3.7, i might need something beefier.

I am running a 5760x1080 triple.
With a combination of high and ultra setting i get 80fps with a Intel 11400F and a 3080ti.
i dont think that 120fps at high / epic settings are possible with your resolution.
I´m interessed in how a newer CPU pushes you forward.

Both your CPUs will be bottlenecking your 3080ti's quite badly.

A useful tool to check the compatibility of the two components is this calculator.

I know the resolution used in the calculator is different but you can get the right picture.

 

[no_frills00]

Both your CPUs will be bottlenecking your 3080ti's quite badly.

A useful tool to check the compatibility of the two components is this calculator.

I know the resolution used in the calculator is different but you can get the right picture.

Thanks mate, this is helpful!