the rule is... when you play TIE the enthusiasm rises 30% , if you play normal stays the same , if you play CT goes down by 50% .... every day the enthusiasm tends to go closer to 5 , the higher it is , the faster tends to go to 5.... if you keep playing TIE , you may manage get it more than 10 , but its hard without cup games , because on scrimmages you play (by default) normal
I hope I helped