This replaced the old sound system, allowing for realistic spatial audio, reverb in tunnels, and a true Doppler effect for passing AI vehicles.
If you own the legacy (non-Steam) version, you can find manual patch files on the Official ETS2 Website . However, version 1.37 is primarily maintained as a legacy branch on Steam for mod compatibility. System Requirements for Smooth Gameplay euro truck simulator 2 version 137 download for pc work
From the dropdown menu, look for temporary_1_37 - 1.37.x for incompatible mods . Selecting this will trigger Steam to "downgrade" your game to the 1.37 build. This replaced the old sound system, allowing for