This is a simple guide that I wanted to post with regards to a bunch on tweaks I found from several forums that help me when it comes to a few things that I dislike with Train Sim World such as:
- Pop-In
- Suttering
- Brightness
- Performance

For me after making these tweaks in the Engine.ini, it has transformed TSW5 and has made the game far more enjoyable. Before the tweaks I did not enjoy TSW5 at all but now I am happily playing it and getting a lot of enjoyment out of it now.

Obviously this is just my experience and I am only sharing these tweaks in case it helps others, as always there is a chance that tweaks to any game could make no difference.

One thing to note before we get started, TSW can override the Engine.ini during an update so it is always worth checking the Engine.ini still has the tweaks after an update.

Note: This is a port of my guide from TSW4.

These tweaks will be going inside the following file: Engine.ini

This file is found in your Documents folder here: Documents\My Games\TrainSimWorld5\Saved\Config\WindowsNoEditor

You also need to set "-DX12" as a Launch Option for the game within Steam, this can be done by simply following the below:

• Right click game in Steam Library
  
• Select Properties
  
• Enter the following in Launch Options box: -DX12

Below are my PC specs for context and reference:
- Intel i7-12700F
- 32GB DDR4 3200Mhz RAM
- Nvidia RTX 4070 12GB

Windows Specs:
- Windows 11 23H2 (No Telemetry, De-bloated, Local Account)
- Latest Nvidia Driver (October 2024: 561.09)

Another piece of info, I play the game at "High" settings at 1920x1080 resolution.

Below is what you need to add to the bottom of the Engine.ini file:

[SystemSettings]
r.CreateShadersOnLoad=1
r.Streaming.LimitPoolSizeToVRAM=0
r.Streaming.PoolSize=10000
r.Streaming.MaxTempMemoryAllowed=5000
r.RenderTargetPoolMin=1200
r.Streaming.FramesForFullUpdate=2
r.Streaming.Boost=2
r.GTSyncType=1
r.OneFrameThreadLag=1
r.LightMaxDrawDistanceScale=50.0
r.MotionBlur.Scale=2.0
r.TemporalAACurrentFrameWeight=0.2
r.TemporalAASamples=4
r.TonemapperGamma=1.85
r.BloomQuality=3
r.Color.Max=0.8
r.Color.Mid=0.4
r.Color.Min=0.001
r.DFDistanceScale=10
r.ViewDistanceScale=4.0
r.Streaming.NumStaticComponentsProcessedPerFrame=200
s.ForceGCAfterLevelStreamedOut=0
s.ContinuouslyIncrementalGCWhileLevelsPendingPurge=0
s.LevelStreamingComponentsUnregistrationGranularity=10
s.LevelStreamingComponentsRegistrationGranularity=30
gc.TimeBetweenPurgingPendingKillObjects=200
TimeOfDaySystem.AutoExposure.SpeedUp=10.0
TimeOfDaySystem.AutoExposure.SpeedDown=6.0
foliage.LODDistanceScale=5
foliage.DitheredLOD=5
ts2.dbg.JourneyChapterLockOverride=1
ts2.save.CheckpointsEnabled=0
ts2.RewardMonitor.ShowLowImpactNotificationsAsFull=0

Now I will not claim to know what each tweak does, as I simply spent time going through several forums over at Dovetail to create the collection I have shown above.

But there some areas you can tweak, so the below two entries are related to performance and VRAM - so tweaks these if you start having issues:

r.Streaming.PoolSize=10000
r.Streaming.MaxTempMemoryAllowed=5000

Also related to performance and pop-in is the below tweak, adjust this down if you have issues:

foliage.LODDistanceScale=5

Also adjust these related to colour and bloom:

r.BloomQuality=3
r.Color.Max=0.8
r.Color.Mid=0.4
r.Color.Min=0.001

Side Note - After applying the tweaks, it is good to check your "Screen Percentage" value in "Advanced Settings" as this may have changed to 87% or another value. If this has changed, then change this back to 100%.

As always for more info please see the sources to the Dovetail forums where I found a lot of these tweaks

Hopefully this helps some people get better performance with less stuttering and reduced pop-in. These tweaks massively improved stuttering and pop-in, the only time I get stuttering is usually when an objective thing is met and the objective text appears in the top right.

https://forums.dovetailgames.com/threads/definitive-stutter-fix-via-engine-ini-settings.70559/
https://forums.dovetailgames.com/threads/please-optimize-tsw4-engine-ini.73687/page-4