I have just been playing my first TA game as the Altarians. Things were going well until tech costs suddenly and within a few turns increased several times. Just a few turns ago, Laser V would have taken 6 turns to research but now takes 20 turns ( my research level has increased and there are no spies ). Planetary invasion somehow suddenly jumped to from 13 turns to 41 turns! It' not just military techs, other techs have also increase in cost and research length by more than 100% within just a few turns.
This really makes the game unplayable as basic ( and neccessary ) techs such as planetary invasion suddenly takes such a great amount of time to complete.
Are others experiencing this too? Did beta testers discover this?