As the title said, I can't play at window mode. I have a new PC with windows 8 installed. I copied Iris file which I downloaded early this year, extracted and had it updated. However, there is no window mode option which is 1024x768x16. I only have 2 options to choose which are 1270x720x32; 1270x720x32, so basically the same. My default screen resolution is 1920x1080. I can't make it any higher than that, lower would make the animation look bad. Please help me solve this problem, thank you.

PS: I can still play at window mode on my old PC. Operating system: window 7; Screen resolution: 1366x768.