My animation is a different frame rate when moving it to another computer.

Hiya, I animated a scene at 12 fps on a computer at college and it was smooth and it worked. However after downloading it from goodle drive onto my perosnal PC the frame rate is at 30 fps and when I bring it back down to 12 it's incredibly slow and no longer lines up with my animatic. I need to solve this ASAP can anyone help?