Hi, this could be a problem with the game drawing the ‘transitions’ from one screen to another. They should auto-disable if they cause problems, but maybe that is not working.
You can turn them off manually by editing a file in \my documents\my games\gratuitous space battles, it’s either config.txt or prefs.ini as I recall (not at the dev PC right now). The line is something like TRANSITIONS = 1.0 and you can just set that to zero.
I presume that’s it, although it sounds like your video card should be able to handle them anyway