Even on a new PC, the original ETS can have issues. Try these fixes:
These would get you from London to Berlin — just don’t expect mirrors to be smooth. euro truck simulator 1 system requirements
Real-world note: You could actually run ETS 1 on a single-core CPU with integrated graphics from 2005. Settings would be low, and the framerate in cities might dip, but it was playable. Even on a new PC, the original ETS can have issues
If your PC is barely meeting the Euro Truck Simulator 1 system requirements, you can still get a playable experience by adjusting these specific settings: Real-world note: You could actually run ETS 1
This is incredibly forgiving. A Pentium 4 was common in 2003. The GPU requirement (128 MB VRAM) means even an integrated Intel GMA 950 from 2005 can technically run this game, albeit with stutters.
What to expect at minimum: Low draw distances, no anti-aliasing, low resolution. You will see "pop-in" of traffic and trees. Frame rates will likely hover between 20-30 FPS.
This is the trickiest part. The minimum GPU (FX 5200) does not support modern shader models, but that doesn't matter because ETS 1 only needs Pixel Shader 2.0.