I struggle in small, managed to win once in medium, get my ass kicked in large.
Have world with 5 levels of social specialisation and 4 broadcast units in space. Has 3 spacelanes, 2 are mine, one goes to comet. Both my border worlds have max social and at least 3 broadcast units.
Enemy culture creeps through comet system to my world and it turns.
So, I try to take the comet system, but it is full of ships. I have class 10 Titan, 5 class 4 Dreadnoughts, about 10 robots and likewise Arcova carriers and build a starbase which I eventually get max weapons and defense before it is whittled away and destroyed.
Battle lasts for over an hour, he just keeps sending wave after wave capital ships and carriers.
Eventually Titan comes. I destroy the Titan but it just keeps coming back increasing in level until I am overwhelmed. By then I have lost too many of my planets and research units to keep building.
I cant leave the battle to try to ameliorate other losses as the moment I stop micromanaging all the ships they do stupid things and get destroyed.
Ships I send for repair immediately turn around and attack the Titan, Arcovas of curse won't launch any planes and just attack nearest ship and get destroyed. I have even had them "argue" while I am controlling them. Tell it to g for repair, it starts turning away and then turns back t attack, I send it again, it turns back again.
And, whenever i right click to set a target, it tilts the perspective until I am edge on and some weird angle and am forced t try to pan it back, usually lose a ship or two while distracted.
It has been awhile sine I played, but I don't recall it being THIS hard.