Finally fixed my stuttering in ACC!

[MapoUK]

After never having ACC run without stuttering, and returning after buying the GT4 pack I was determined to try and resolve the issue. I was running at 80 to 120 fps in 4k but was still plagued with the dreaded microstutters.

Most of you may already know this, but for those who it may help.

To resolve the issue (for me anyway) if you locate the file ac2-win64-shipping.exe (which in located in your ACC game folder SteamLibrary\steamapps\common\Assetto Corsa Competizione\AC2\Binaries\Win64) - right click on it, select properties, select the compatibility tab and click on Disable Full Screen Optimisations. In game set the frame limiter to your screen refresh rate and turn on V-Sync. Windows Game Bar Mode also needs to be disabled for this to work.

I also used the same same option on the acc.exe file (which in located in your ACC game folder SteamLibrary\steamapps\common\Assetto Corsa Competizione\AC2) just in case.

It's cured my microstutters and I've been able to put most settings back to epic on 4k and retain solid 60fps with no stutters

Kudos and my eternal thanks to PhilS13 at the AC Forums who posted this solution over a year ago, just wish I'd found it sooner.

 

[Wolverine_13]

Thank you for posting! After the last big update I had massive stutters which I managed to get partially under control by lowering the graphics settings but microstutters are still there.

I will definitely try this!

Cheers!

 

[Stepy]

Thanks will try it out, just one thing how do you disable windows game bar ?

 

[MapoUK]

Thanks will try it out, just one thing how do you disable windows game bar ?

Go to Windows settings, click on Gaming, on the left panel click Game Bar and then the on/off button should be near the top

 

[Neilski]

To resolve the issue (for me anyway) if you locate the file ac2-win64-shipping.exe (which in located in your ACC game folder SteamLibrary\steamapps\common\Assetto Corsa Competizione\AC2\Binaries\Win64) - right click on it, select properties, select the compatibility tab and click on Disable Full Screen Optimisations. In game set the frame limiter to your screen refresh rate and turn on V-Sync. Windows Game Bar Mode also needs to be disabled for this to work.

Glad you've sorted the issue!
You list what amounts to 4 separate changes here: disabling optimisations, setting frame limiter, turning on vsync, and disabling game bar. Do you know for sure that all 4 are required?

 

[MapoUK]

I have no idea if any combination or single item resolved the issue, I just implemented all of the recommendations that were posted.

It would only take 10 mins to try them individually, but I have no need as its running 4k on ultra settings at 60fps with no microstutters.

 

[The Preacher]

After never having ACC run without stuttering, and returning after buying the GT4 pack I was determined to try and resolve the issue. I was running at 80 to 120 fps in 4k but was still plagued with the dreaded microstutters.

Most of you may already know this, but for those who it may help.

To resolve the issue (for me anyway) if you locate the file ac2-win64-shipping.exe (which in located in your ACC game folder SteamLibrary\steamapps\common\Assetto Corsa Competizione\AC2\Binaries\Win64) - right click on it, select properties, select the compatibility tab and click on Disable Full Screen Optimisations. In game set the frame limiter to your screen refresh rate and turn on V-Sync. Windows Game Bar Mode also needs to be disabled for this to work.

I also used the same same option on the acc.exe file (which in located in your ACC game folder SteamLibrary\steamapps\common\Assetto Corsa Competizione\AC2) just in case.

It's cured my microstutters and I've been able to put most settings back to epic on 4k and retain solid 60fps with no stutters

Kudos and my eternal thanks to PhilS13 at the AC Forums who posted this solution over a year ago, just wish I'd found it sooner.

Wow. Just did this and now it's a silky smooth as my other sims! Absolutely transforms the game. Many thanks.

 

[Botmeister]

Thanks for sharing, just edited the settings you suggested and gonna try it later today.

 

[Günthar Rowe]

Seems to have improved. Not fixed yet. Thanks for your pointers.

 

[Ian Cameron]

Seems to work for me when starting game in Oculus mode. But Steam VR causes significant stuttering.

 

[pendragon88]

' Windows Game Bar Mode also needs to be disabled for this to work. '

By telling that, did you mean Windows Game Bar or Windows Game Mode? Sounds like you mixed two of them to create a new thing . But from your other comment i can understand that you meant Windows Game Bar not the Game Mode, right? Are there any knowledge about the Windows Game Mode then? Should it stay on or off, is it making any difference? Anyone tried experiencing it i wonder?

 

[Kurupt CDN]

By telling that, did you mean Windows Game Bar or Windows Game Mode? Sounds like you mixed two of them to create a new thing . But from your other comment i can understand that you meant Windows Game Bar not the Game Mode, right? Are there any knowledge about the Windows Game Mode then? Should it stay on or off, is it making any difference? Anyone tried experiencing it i wonder?

If you have a Xbox controller plugged into your PC you can use it the same way as on Xbox...so there is a game bar mode that can be enabled/disabled in windows settings.
When enabled you push the Xbox button on your controller and a bar pops up which gives several options/features like stream or take a screenshot.

There is also a gaming mode in the options as well when enabled is supposed to shutdown background apps and give priority to gaming.
From what I've read regarding gaming mode is it was best to turn off as many have had worse performance with it enabled.

 

[Demithio]

After never having ACC run without stuttering, and returning after buying the GT4 pack I was determined to try and resolve the issue. I was running at 80 to 120 fps in 4k but was still plagued with the dreaded microstutters.

Most of you may already know this, but for those who it may help.

To resolve the issue (for me anyway) if you locate the file ac2-win64-shipping.exe (which in located in your ACC game folder SteamLibrary\steamapps\common\Assetto Corsa Competizione\AC2\Binaries\Win64) - right click on it, select properties, select the compatibility tab and click on Disable Full Screen Optimisations. In game set the frame limiter to your screen refresh rate and turn on V-Sync. Windows Game Bar Mode also needs to be disabled for this to work.

I also used the same same option on the acc.exe file (which in located in your ACC game folder SteamLibrary\steamapps\common\Assetto Corsa Competizione\AC2) just in case.

It's cured my microstutters and I've been able to put most settings back to epic on 4k and retain solid 60fps with no stutters

Kudos and my eternal thanks to PhilS13 at the AC Forums who posted this solution over a year ago, just wish I'd found it sooner.

Interesting. However, any time you are not holding the exact same fps as the desktop refresh rate you will micro stutter. No matter the fps. Bouncing from 80 to 120 fps will cause stuttering. ACC has no way to set the refresh rate independently in game it seems. Im going to try the compatibility thing just to see if it improves overall performance somehow. However, Im not sure that had anything to do with your original issue.

 

[Mick1]

I use a Dell 27inch 60 Hz monitor. I had stuttering too. I went to the Nvidia control panel and switched the setting for max. fps to 60 and Vsync on. Ingame these settings are off. Now no more stuttering.

 

[sidy]

Thanks for the tips!

 

[tomythto]

this really helped me a lot thanks. However one issue is I can not still get over 60hz my monitor is 75 hz and i have 2070 eq. card.

 

[Kurupt CDN]

I was having alot of stuttering in VR, I came across this info and has seemed to solve my issues.


There are a few things you could try:


Close other programs (especially CPU and RAM heavy programs like web browsers).
Give Assetto Corsa Competizione High priority via task manager.

1) Run Assetto Corsa Competizione.

2) Open Task Manager [CTRL+SHIFT+ESC]

3) Switch it to the More details view if required using the “More details” link in the bottom right corner.

4) Switch to the “Details” tab.

5) Right click “Assetto Corsa Competizione.exe” on the list -> “Set priority” -> “High”


OPTIMIZE NVIDIA SETTINGS

If you have an NVIDIA graphics card, you can do some things to tweak your settings even more. These tweaks require that you go into your NVIDIA 3D settings, from the NVIDIA Control Panel.



Tip: Remember to keep your graphics card driver updated! Especially never graphics card will get a lot of performance boosts from just updating the drivers.

• Open the NVIDIA Control Panel (right-click on your desktop and choose it from the menu).

Click Manage 3D settings.

You can either change the settings for all programs and games, or you can do it for select programs. Select Global Settings or Program Settings and find Assetto Corsa Competizione on the list. If you choose Global Settings, the changes will affect all programs and games.

• Set Maximum pre-rendered frames to 1.
• Set Preferred refresh rate to “Highest available”.
• Set Power Management Mode to “Prefer maximum performance”.
• Set Threaded optimization to ON.
• Set Vertical sync to OFF.
• Click apply and you can now close the control panel again.

Getting rid of junk files

A. Clearing PC from temporary files.

Those files don’t do anything, but they can take up a considerable amount of space and can slow down your PC even if you still have a lot of space on your storage device(s).

It’s especially helpful for those who have installed Windows for a few months and never really cleared junk from PC properly. You can alternatively use some utility programs such as CCleaner, but you still need to double-check whether all of those junk files are removed from your PC. How to do that:

• Press Win + R to open the run box -> type “prefetch” -> remove all junk (some files may not be deleted but it’s OK)

• Press Win + R -> type “%temp%” -> remove all junk (some files may not be deleted but it’s OK)

B. Run disk cleanup

Yet again there might be some programs that can do that for you, but if you don’t have one or you are not sure it actually removes the junk files – do the following

• Go to windows search and type “disk cleanup”

• Open the program

• Checkmark every file category that’s available and press OK


Maximization of power usage

• If you for some reason don’t want to use BHP, go to Power Option in Windows Control Panel and set it to High Performance. This will allow your CPU to use as much as power as possible.

I have ultimate Performance enabled


I did not do the following steps but worth a try if you are still having issues.

• Turn off C-states in BIOS*

• This one is highly optional and I don’t recommend anyone doing that unless you know what you are doing! For example, for some motherboards not all C-states need to be turned off. C-states are the mechanisms that your motherboard uses to save energy. When C-states are turned off, CPU cannot be bottlenecked by the lack of power input from your motherboard. Disabling of C-states works very well with the High Performance power mode described above.

Game Shortcut

If you have the game shortcut on your desktop.

1. Right click on it and press properties and the Compatibility tab.

2. Tick override high DPI scaling Behavior. and choose Scaling performed by (Application) in drop down menu.

3. Tick Disable fullscreen optimizations.

4. And tick Run this program as an administrator.

 

[Andrew Harper]

Thanks for this! I'll give it a try later on

 

[Kurvz]

I was running at 80 to 120 fps in 4k but was still plagued with the dreaded microstutters.

Wow thats some good FPS what CPU and GFX you running ?

 

[drs76]

Worked for me. Thankyou!