The headline feature of the 1.35 download was experimental support for DirectX 11. Before this, the game was aging under the limitations of DirectX 9. The upgrade allowed for: Improved Performance:
For most players, the game updates automatically through the Steam client. If you need to specifically download or revert to version 1.35, you can use the system: Open your Steam Library . Right-click Euro Truck Simulator 2 and select Properties . Go to the Betas tab. Euro Truck Simulator 2 1.35 Download