Okay, so I loaded up my save game where I was getting some studdering. It was still studdering and wasn't using more than 1.3gb. I'm not sure what the deal is, but I'll investigate more tonight.
Sorry to double post, Should of commented on it beforehand.
How far along in the game are you? A few things studdering wise I noticed is pirates when they go back home build up and build up. Thus increasing CPU/Memory usage. Yall might wanna give them a timer so they self pop after completeting a mission and returned to base after so long. We did that in DS to help curve studdering and late game lag.
Another huge issue some have is the Empire tree kills your FPS/CPU. Alot of people let the game auto pin everything. This in my non professional opinion cause the game to have to keep track of everything twice. So, I laymans terms its like running 2 games at once.
Though the Empire Tree issue maybe a graphical one instead of pure CPU, it does cause what everyone expereneces at a certaint point slideshow FPS. Simply unpinning everything little thing and pinning the bare min. required for the player him or herself to use increases FPS and reduces late game lag.
I know it late for this weeks beta, sorry for not mention this before. Id show you pictures with FRAPS running but I dont have my HD with all that stuff on it. Computer is a Repair Bay after a brutal Advent bombing run.