Short Trains add-on for American Improved Trains in ETS2 v3.3

Short length of freight trains not much 20-30 cars for better performance and against frame drop.
Only for use along with mod "American Improved Trains in ETS2" v3.3
place this add-on directly above the mod "American Improved Trains in ETS2" v3.3

Changes in version 3.3.3 for ETS2 (v1.36x):
now american wagons are allocated to separate loading groups.
cleaned outdated and unused settings in files

This add-on does not need to be used if everything is ok with the frame rate when trains appear.
short trains are less spectacular