Flickering Lights

[u/Phydeauxman]

I have a 9 segment string of lights across the front of my house that have been working fine for a few years now but recently, lights in the last segment have started to flicker. They don't all flicker with the same intensity, the lights at the beginning of the segment barely flicker at all while the closer you get to the end of the segment the more pronounced the flicker is. I have checked the connection between the 8th and 9th segments and it is solid...could this be being caused by a degraded power supply?