Ok a quick update since Alpha 2 V62. FPS have a improve, but not perfectly fluid yet. I did found what cause a big lost of FPS, it's the left panel with all information parameters changing according to the battle. Without moving the camera I have 60 FPS, fluctuating some times between 53-58 FPS in battle with 2 ships, as soon as the panel is open and you move the camera, framerate go down to 43-45 FPS, so clearly this panel has a huge impact on FPS. But even close just moving the camera make the framerate loose 2 to 7 PFS anyway. It also looks like that information of our ship path is not fluid, writing suffer from some kind of tremor, that make a really bad impression on game fluidity.