The save file is 2466.88 kB. Let me guess. You're playing with multiple home worlds?
Actually, I picked 4 saves and threw them in. May not have been an ideal choice.
Going to earlier respondents in the thread: Good thoughts on the martyrs/cloaks. The limit of my tactical thinking had been to throw my fleet at it, eat what I can, retreat the botnet, rinse and repeat. It just wasn't working well, especially when the 100+ blade spawners made their transit.
I do like the special forces concept. I have just hit an edge case where they might be a bit too beefy for a 7.3 game. I don't know what changes, if any, I'd want to make.