Do you mean Hdmi and vGa by any chance? If so a VGA signal degrades the longer it goes and should be under 25 feet with High Definition screens unless you use a booster amp. And that is with a good quality cable. While it may work okay with a longer cable, it isn't guaranteed, especially with a splitter which will further degrade the signal. I would start there.
good day, I have both cdmi and via outputs set up from my computer for easy worship. cdmi is stable but the via going to projectors fails from time to time, replugging connects seems to restore signal. have checked all cables and splitter used for two projectors to no avail.
can you possibly give me any pointers to my next move.