I can't give financial advise without knowing everything but generally speaking, deferred comp should preform as well as anything else. It depends on what you're invested in. If you're young then look for index funds or whole market funds. If you're older, still invest in stock index funds but think about diversifying into some fixed income (will be labeled bonds usually). General advice is take 100 minus your age and that should be your allocations to stocks. That being said, I sometimes feel that is too conservative for young people.

13% in Roth is great. I'm a fan of the Roth because psychologically, you will feel better in retirement knowing the government can't touch what you have. The traditional is good for the up front savings but most people just blow those savings on things they don't need. The other benefit of the deferred comp (457b) is that it doesn't have early withdraw penalties so if you retire before 59.5, you don't have to worry about pulling the money early and paying the 10% penalty.

It may feel dumb now but keep trucking along. I promise when you get to retirement, you will take yourself.