I would be curious to know what would happen if you made a new user, logged in as that user, and tried to run the program. If it works, it could help isolate the problem to some file or files in the user's profile. If not it would at least partially rule that out. If it were me I would try running it as administrator once just to see what happens, but you can decide for yourself. Is there any common denominator on the three machines like identical video cards? Are the OS's upgraded from an earlier version of the OS, (like win 8 to 10?) Do the systems all have the more or less the same software installed? Are you for some reason using a 32bit os on any of them?
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