Going to full windowed mode on my wide screen gave it a hard studder. Sound and graphic. Cant get into beta yet to test if its continues but its there. 3.4 duel core, windows 7 retail release 9800 gtx. 4 gigs ram running full nvidia motherboard ram and card. latest release of software. Did not crash the game just a very hard studder for the sound. More annoying. Maybe on a lesser computer it could be a game ender. time length 5-12 seconds.