Exxagerations in some areas are ok, but limiting today avaiable tech (an screen who shows the rearview/outside view of your ship from cameras mounted on finds/wings? Please, cheap cars today have rearview cams!)
Screens displaying an alternate view from the main window is called PiP (Picture in Picture) and is very resource intensive, even for a small additional "window". The best way to demo it is as follows: Take your current frame-rate. Must be somewhere between 45-60 on decent hardware, yeah? Now halve it. In a ring/asteroid belt? Take another 5-10 frames off. On a planet? Take 15ish off. And of course, given that this is FD we're talking about, you can kiss an additional 10 frames goodbye just because (they can't even get LODs and AA working correctly, if at all, so you expect them to manage PiP HOW?).