Logic Pro system overloading problem

I've taken all the correct steps to have my project not overload, yet it is still happening. My project only has 3 tracks and when I go to record, it overloads in the first 10 seconds. It's a very small project, and I feel as though it shouldn't be happening. It shows at the top that the "HD" (which I think means hard drive) is the problem since it's spiking. Can anyone help?