I am sure everyone has noticed this already but once all units have been spotted when the ARS finishes getting constructed, FPS drops drastically. I know it's because the game has to store a lot more data for giving you visuals of each unit and structure, but will this be fixed? Playing with just one solar system would be terrible, and galactic warfare (if that's still happening) wouldn't even be doable.
Fixed? Not really. Rendering of 10000 units in same time will always need more performance than rendering of 1000 units, but there lot and lot of improvement which might increase performance in future. Actually game don't really need to waste computer performance on things that isn't on your screen or just too long away to see them. With mostly each update developers implement more optimizations and obviously they'll continue to do that. Galactic War never designed to let you play on tons planets in same time. For more info check this thread: https://forums.uberent.com/threads/psa-what-galactic-war-actually-is.53312/
Best fix: Remove that stupid unit from the game. I really don't understand the attraction of totally removing the fog of war from an RTS game. Or at least make it a little more localized so that if we want total vision of a scale 3 planet, we need to build about 10 of them and spread them around.
That depends how much they reveal on a much larger planet Slamz eg 2000 radius. I would imagine that you might need to build a few of them then. Correct me if I am wrong, as i havent tested them much