I am playing with all graphical settings on Epic, except for shadows on Low. The game runs at 60 fps. When looking at planets in the background, fps drop to 45. If I set the view distance near 80%, the planet disappear and fps get back to 60.
Devs, it seems you can really improve the performances of the game by making the planet less ressources consuming.
Players, if you want to gain fps or having a lot more visibility on the battlefield, lower the view distance. Setting it to 0 will remove the background, letting you fight in the empty void of space.
EDIT : setting the view distance to 0 will remove the lance firing effects ! So if you just want to remove the background items, setting it at 10% seems good.