If I am a student of high potential but not great on paper, should I transfer?

I am currently in my first year of a general mathematics PhD program at a state university that isn't rated particularly high. As far my classes go, I put in little to no effort, and still am at/near the top of my class. The students in my classes just seem to be at a much lower level of understanding than I am, and I am afraid I am stagnating myself by not being in a more competitive setting. I've begun working on a research project with a few other students who are soon to graduate, and thus far, everything we have done this semester has come from me, even though I haven't even finished the sequence of courses relevant to the material we are researching. Granted, there are a few professors who are well-respected in their field that I currently work under, and that is a great privilege, but I do not feel that most the other students there are my academic peers.

I would like to look into transferring to a better university, but I have one main concern; my undergraduate transcript is not very good. Upon close inspection, one would find that I received very good grades in the advanced classes I took, but poor grades in the easier classes I took earlier in my academic career. I got a 4.0 the first semester of my grad program, and am confident that I will 4.0 this semester as well, but will this be enough to get into a highly ranked PhD program?

So my question is should I look into transferring?(and maybe risk offending the professors I have a good relationship right now?) and if so how can I prove that what they see on paper(my undergraduate transcript) is not reflective of my abilities as a mathematician?