Technically, SCS Software never released an official PSP version of ETS2. The versions you find online are or "conversions." Developers in the mobile modding community take the assets, maps, and truck models from the PC version and optimize them to run on the PlayStation Portable architecture (ISO/CSO formats). Key Features of the Highly Compressed Version:
OpenGL or Vulkan (Vulkan is usually faster on newer Androids). Frameskipping: Set to 1 or "Auto." euro truck simulator 2 ppsspp highly compressed work
If you notice stuttering or audio lag, tweak these settings within the PPSSPP menu: Technically, SCS Software never released an official PSP