I realize that there are bugs and I have reported this problem (even though it's probably not considered a bug, but rather a lack of user control),
the "Artifacts Masking" slider is gone.
With "artifacts masking" turned up to average or above normal, what you see in the screen shots can be pretty much eliminated.
It happens when the spot light beam passes over "CENTURY".
The "parachute" scene in "Kingsman: The Secret Service" is also a good example of SVP 4.0's inability to handle this same problem, but under different circumstances, at least with the most recent build. The parachute scene employs small fast moving falling objects (people) where this ghosting/flickering effect can be seen very clearly.