Stuttering

[SilentHunter399]

Specs: 12th Gen Intel Core i9-12900K 16 core, 3080ti Suprim, 32GB Ram, Samsung SSD 980 PRO 2TB, ROG STRIX Z690-F GAMING WIFI Motherboard. Any Suggestions I haven't tried yet?

[Wolfgang]

Are you using any mods?
Have you tried to deactivate SSAO?

[LoneOne]

Do you use the in-game VSync? If so you could try to disable it and use the one from the Nvidia Control Panel instead (either globally or via a game profile for ATS).

If you use a Gsync / FreeSync monitor you could probably disable VSync completely (if you use a frame limiter at or some frames below your monitor cap) or enable it in the Nvidia Control Panel together with Gsync so that it only gets applied when the game's FPS exceed the monitor's cap (when no limiter is used).

You can also try and edit config.cfg to use this value here (it is the very last entry in my version of the file and has a default value of '20'):
uset t_averaging_window_length "5"
Some say '5' is the current sweetspot; if using Gsync / Freesync you could also try '0' instead.

I encountered some Ghosting and Rubberbanding (game felt like on 0.5 speed for a few seconds, followed by what felt like 2x speed for some more seconds before it normalised again in some areas) before I disabled Vsync in game and used the one from the AMD Adrenaline SW instead (my current monitor only supports exclusive Gsync which does not work with AMD GPUs).

[hackintoshchap]

Until we get the major game engine update which gives proper multi-core support, better LOD with reduced pop-in, DX12 and TAA support to name a few known updates, the best advice is to run at 60Hz, 60fps locked either at driver level for the game or through a third party app such as MSI Afterburner/Rivatuner.

Trying to run much higher rates especially with modern hardware does cause increased stuttering and rubber banding as the GPU is kept waiting on the CPU feeding info to it in a timely manner.

The new game engine updates are being bug fixed right now, but delivery of the new engine will probably come some time in the first half of 2024 - I don't want to say earlier because I know that SCS will take their time, rather than rushing this out the door. It has and remains a long awaited update that the game needs not just for PC but also for a console release.

[SilentHunter399]

I’ve tried everything you guys have mentioned. I’m only running a few mods but I’ve disabled them all to see if the stuttering would stop and it was still stuttering so I turned them back on. Only have a few of Zee’s engine sounds and a few truck mods. I’ve notice that since SCS last update latency spikes have gotten worse. Lots of stuttering now. I shouldn’t have to turn down scaling with a 3080ti Suprim.

[hackintoshchap]

You perhaps should turn down scaling and try the following mod for better AA performance right now:
https://forum.scssoft.com/viewtopic.php?t=323193

The main issue with the game engine is that is still feeds the GPU too slowly for modern hardware, hence frame stutter.

[Czar]

Disable Hardware Accelerated Scheduling and Disable Game mode. (restart your PC)

Originally posted by hackintoshchap:

You perhaps should turn down scaling and try the following mod for better AA performance right now:
https://forum.scssoft.com/viewtopic.php?t=323193

The main issue with the game engine is that is still feeds the GPU too slowly for modern hardware, hence frame stutter.

It is HAGS + Game Mode messing with the game.

Before I couldn't raise mirrors distance above medium, regardless of low GPU and CPU usage. Now I have them on Ultra distance. I can even push 400% scaling with just an RTX 3060 12gb and still have low temperatures. Stable vsynced frames at 60fps all the time with smooth frame times.

DISABLE BOTH HAGS AND GAME MODE. They are messing with CPU and GPU communication negatively.

All my settings are maxed. 1080p. 300% scaling for lower GPU temperatures than 400%, vsync at 60hz/60fps

i5 10400f + RTX 3060 12gb

[SilentHunter399]

Originally posted by Felip. | Czar:

Disable Hardware Accelerated Scheduling and Disable Game mode. (restart your PC)

Originally posted by hackintoshchap:

You perhaps should turn down scaling and try the following mod for better AA performance right now:
https://forum.scssoft.com/viewtopic.php?t=323193

The main issue with the game engine is that is still feeds the GPU too slowly for modern hardware, hence frame stutter.

It is HAGS + Game Mode messing with the game.

Before I couldn't raise mirrors distance above medium, regardless of low GPU and CPU usage. Now I have them on Ultra distance. I can even push 400% scaling with just an RTX 3060 12gb and still have low temperatures. Stable vsynced frames at 60fps all the time with smooth frame times.

DISABLE BOTH HAGS AND GAME MODE. They are messing with CPU and GPU communication negatively.

All my settings are maxed. 1080p. 300% scaling for lower GPU temperatures than 400%, vsync at 60hz/60fps

i5 10400f + RTX 3060 12gb

I’ll give this a try. I use windows 11 but had the same issues with windows 10.

[bewest169]

I am in the same situation tried everything just learned to live with it until either they update engine or get Unreal 5 engine they are using a old engine giving the issues

[AyMazingATS]

Originally posted by bewest169:

get Unreal 5 engine they are using a old engine giving the issues

And yet we have another person who suggests using UE5. Absolutely clueless in my opinion.

Guess how old UE is? No? It is 25 years old. That right.... 25 years!!!

This game will not move to another game engine. SCS's in house Prism3D is constantly being updated. DX9 to Dx11. DX12 updating is currently being worked on. The loading time fixes in 1.48.5 released today with ETS2 is just another example of things being worked on.

Not to mention moving to a new game engine would require all the branded trucks and trailers to have the licensing re-negotiated in most cases, therefore possibly costing SCS millions of dollars.

[mojo_musica]

Originally posted by bewest169:

I am in the same situation tried everything just learned to live with it until either they update engine or get Unreal 5 engine they are using a old engine giving the issues

They own and developed the Prism engine used in both ATS and ETS2, and it has been continually updated since they deigned it. There is no point in using Unreal 5, it is just as old as Prism and would cost SCS a great deal of time, effort and money to implement. It would cost you as well, as any new DLC would have to reflect the license costs.
The next big step, due soon, is moving to DirectX 12, completely transforming the GFX and features of the game. All the game engine updates have been free to players, compare that to devs releasing a new version every year at full retail price, that does not meaningfully update the game at all.

[Wolfgang]

Originally posted by bewest169:

I am in the same situation tried everything just learned to live with it until either they update engine or get Unreal 5 engine they are using a old engine giving the issues

What makes you think Unreal Engine is newer than the engine SCS is using? Because they put a fancy number behind the name of their commercial engine which SCS doesn't have to do since it is NOT commercial?

If you have absolutely no idea what tf you are talking about maybe it is better to not say anything instead of showing you lack of knowledge.

[LarryA]

Originally posted by SilentHunter399:

I’ve tried everything you guys have mentioned. I’m only running a few mods but I’ve disabled them all to see if the stuttering would stop and it was still stuttering so I turned them back on. Only have a few of Zee’s engine sounds and a few truck mods. I’ve notice that since SCS last update latency spikes have gotten worse. Lots of stuttering now. I shouldn’t have to turn down scaling with a 3080ti Suprim.

Pretty close to the same computer specs. 64 Gbs of Memory. Active Mods 48. Log errors. None. Always Always Have A Test Profile for Testing Mods Only.

Try the following.

Library/American Truck Simulator/Right Click/Select Properties/General Tab/
Launch Option settings/

Edit: Added correct value for the following Memory:

8GB RAM:
-mm_pool_size 4096 -mm_max_resource_size 100 -mm_max_tmp_buffers_size 1000 -nointro -unlimitedlog
16GB RAM:
-mm_pool_size 8192 -mm_max_resource_size 100 -mm_max_tmp_buffers_size 1000 -nointro -unlimitedlog
32GB RAM:
-mm_pool_size 16384 -mm_max_resource_size 100 -mm_max_tmp_buffers_size 1000 -nointro -unlimitedlog
64GB RAM:
-mm_pool_size 32768 -mm_max_resource_size 100 -mm_max_tmp_buffers_size 1000 -nointro -unlimitedlog

Can remove nonintro. That setting removes the game intro when launched.

-mm_pool_size 16384 -mm_max_resource_size 100 -mm_max_tmp_buffers_size 1000 -unlimitedlog

Close.

"Copy and Paste config for back up."

Documents/American Truck Simulator/config Open with Note Pad or Note Pad ++

Find the following line.

uset r_buffer_page_size the value is 10. Change the value to 30

Scroll down to the bottom of the config list.

uset t_averaging_window_length change to 2 times monitor refresh rate. example 60 Hz change to 120

Personally set the In Game Refresh rate to 1/2 monitor refresh rate. Examples

60Hz to 30 FPS, 144Hz to 72 FPS In Game. Not a fast action game you Do Not Need to run at 144 Fps.

Moving on:

Once the above is completed do this.

Right click desk tap/show more/Tap Nvidia Control Panel.
Select a Task Window/Tap Manage 3 D Settings a new window will open

There will be 2 tabs. Tap On Program Settings
1. Select A Program/Drop Down Menu select American Truck Simulator.
Scroll down to

Power Management Mode/Open the drop down and tap on Prefer maximum performance.
The above setting will Not Over Volt the GPU. Provide voltage Per GPU Load.
Tap OK/Tap Save.
Any Questions Please ask.

There is some other approaches that can be made as well. Should resolve Micro Stutters and or Rubber Banding issues.

Please Report Back if the above resolved the issuesd with Micro Stutters and or Rubber Banding.

Have A Great Day

[Etny2k]

Thanks for all the tips. I just upgraded from 10700k to 13900k and still get stutters. I will play through the stutters until new engine stuff. I made it almost 5000 hours already what is 500 more.

[Qrazy]

Originally posted by Etny2k:

Thanks for all the tips. I just upgraded from 10700k to 13900k and still get stutters. I will play through the stutters until new engine stuff. I made it almost 5000 hours already what is 500 more.

Whats the rest of your hardware specs? I don't get any stutters on either of my PCs.

[Wolfgang]

Originally posted by Etny2k:

Thanks for all the tips. I just upgraded from 10700k to 13900k and still get stutters. I will play through the stutters until new engine stuff. I made it almost 5000 hours already what is 500 more.

Unless that CPU is has better single core performance you haven't gotten any upgrade. Keep in mind that this game is still running mostly on one core so single core performance is currently the thing you actually can get somewhere.