Graduated from an MRM department but got under-placed at a 3-3 teaching school. I thought I could move up but the teaching tasks eat up my time much more than I expected.
I should have accepted a visiting position at the first place. People keep saying that you can move up but that is a big lie. The limited time and research support literally make it almost impossible to focus on working on good ideas. In my first two years, I felt sorry about myself because all the training I got in my PhD program is wasted. Now, I do not feel sorry about myself anymore because I have gradually accepted my fate.
My advice is that you should make a choice as soon as possible. If you want to do research but could not get an offer from a research school, get a visiting position, and don't settle down on a teaching school. If you don't want to do research, forget all the things you learned in your PhD seminars and get some hobbies to enjoy your life in a teaching school.