After many years of wearing baggies on the bike I have finally made the jump to more proper cycling shorts and I'm beginning to understand the benefits of a properly manufactured chamois. Problem is, however, I feel that the shorts provide too much compression and cause some discomfort "down there", as well as getting uncomfortably hot. I'm sure that the shorts aren't too small as I'm only 5'5 and 137 lbs.

Could the problem be due to a fabric that is too supportive or noncompliant. For reference I'm wearing Performance Ultra Bibs (it's an older model however, as I bought them years ago but never started wearing them till now). Would my riding comfort be improved if I bought shorts made of a thinner or lighter weight lycra, such as that found on many castelli's or sugoi's?

Thanks for the help!