It is a bit better than older Singularity Viewers, but it isn´t at all that solid than maybe Firestorm. I am using Windows 7 with an intel core i5 prozessor and a ATI Mobility Radeon 5470 HD Videocard. I know that this problem isn´t usuall but maybe anyone knows about this issue and can tell me what i could change. Or can give any hints. Thnak you for helping. Kisses Lena