I have XPPRO SP2, Office 2003, Gigabyte P35-DS3L MB (bios2.4), EVGA NVIDA 8800GTS 320MB DDR3 Dual DVI, updated driver. 2GB RAM, 500GB SATA HDD, LITE-ON DVDRW LH.
I have this system hooked up in a sound room. One DVI is hooked to my monitor the other is hooked up through a 75 foot cable to the projector (the cable is VGA) to a SHARP XG-C430X, I am using a Kramer for the Switcher/ Scaler. This allows me to hook up DVD/VCR/Components etc to a sound board and run through my PC.
The problem I am having is when I have both of the Video ports hooked I have some lag time when I point to START. Sometimes it is just grey for several seconds. When I point to a file to open it has some hesitation 5-10 seconds. I have run the dual monitor configuration several times trying different Resolutions, swaped out primary and secondary monitor, changed hertz, I have adjusted the Video Memory and Core bus thinking this might help. No help. I have gone through most of the basic checks. But still get this lag and hesitation. Some of the presentations I do are live and it is a real problem with this lag time. I am thinking that it is either Software related XP OS, or The video card plus long VGA cable to the Sharp projector.
If you can help thanks!