I think it depends on the parish size, and the priest. for example, there are never more than 35-40 people at DL in my parish. most of them are elderly, so they confess at the weekday liturgies. at vespers, about 3 people a week confess. so, we have those who are there for 15 minutes confessing, and those who are there for about 2-3 minutes. I thank God for my priest. he gives us councel and advice at confession.
perhapse you should find a smaller parish, or a different confessor?