Need a little bit more information regarding what's happening. As far as I know, I haven't seen a successful tri-touchscreen. So I'm not sure if it's possible. I'm assuming there's an issue between the touchscreen calibration software not properly differentiating between absolute and relative position. That is, it (like many GAMES suffer from) assumes everything is occurring across a single screen. If it's possible, you might have to use separate software to isolate 3 separate areas with 3 separate input devices, so that each touch screen matches the screen it's on top of. Again, this is an assumption as you haven't described the detailed nature of the problem, but I figure the software is trying to control the cursor across all 3 screens at once, assuming it's a single screen. Whereas, a single touch screen is only large enough to fill 1/3rd of that area. Is that what you're experiencing?
Also, please be patient when you're working in niche territory. I have a 5x1P setup and, trust me, it got frustrating for a while. I had to develop my own solution to get 1080p and lower res 4:3 games to work without issue, and it took almost a year before I found the software I needed to make the hack functional. If it's possible, it's likely you'll have to do some figuring out of things for yourself. Perhaps you can coax the company you're dealing with into integrating direct multiscreen support, as the issue sounds like one of software. Otherwise, it seems you'll have to find other pieces of software to get your situation working. Remember, it took me a year. But that's what you need to expect when few people are doing what you're doing. You have a unique setup, my friend.
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