one more thing, I can see tearing (on both screens, on HUD and on output) only when using Triple Head and only on high resolutions (I have worked with mix and movie resolution 2304x640, I tried AIC, ProRes and PhotoJPEG and result was the same)... other thing is pure performance, video is glitching and strobbing but movie and graphics load indicators are about 25-40% and FPS indicator (in Layers) is OK (25FPS and there is no drop frame indication)
