Asked me unity optimization question .I answered, Interviewer seems ignorant how optimization work 1) I Asked him about team size refused to answer 2) Question was asked to me regarding a function , asked him about input outputs of the functions refused to answer. 3) I Asked him about company's product refused to answer 4) After 15 minutes started showing irritable behaviour , and without ending interview , started giving me feedback. Waste of time keep away from such unprofessional companies.