I'd look in add-remove program and see if any of these are in the list and uninstall them. TriCaster only need the main GPU driver. When I install an nVidia driver update, I use custom mode and uncheck the GeForce Experience (and other optional components).
We did that and deleted any NVidia programs we thought caused the problem and ended up
blowing away the driver too. We also did the custom install. I don't know if something was added
to the registry. If you have any other ideas, I'd sure appreciate it.