Huge framerate difference on similar machines?

Hi, I am working on a game and i am having this very weird issue that i can’t seem to figure out. I am running the game in the unity editor and on 2 exact same Macs i am getting
600fps on one and 8fps on the other! I am also getting 8fps on a laptop with i7, 8gb ram and an Nvidia 540M. I’ve tested other machines as well and it is always either 600fps or 8fps. What could be causing this? Am i missing some kind of settings in Unity?

check for the video card memory and the version plus some programs make systems boost up and down so check if they both have same apps installed