I did something very similar. I went to grad school to focus on a specific field of computer science. University is an amazing place. Classes are not the thing

I did something very similar. I went to grad school to focus on a specific field of computer science. University is an amazing place. Classes are not the thing thats valuable. To me its the time, freedom, and the environment to really dig deep in your course topics, or gain experience in areas that really interest you. The one thing I learned at university is there is soo much opportunity to do research. A lot universities have a computer graphics department or a lab that work on fluid simulations. Working at a lab provide you a ton of opportunity to connect, network, and gain experience where you want to go is right there. I went to grad school to focus pursue a career specializing in Augmented Reality, and being in this environment has helped me get much more exposure and networking in that field than working on open source projects or building side projects.