Jagged lines a few lines into print yet print come out perfect

[TT_Vert 3]

  I don't recall seeing this ever before but I don't know if this is some type of layer/row interlock setting to allow the adjacent lines to bond better together? I doubt it but throwing it out there. The first layer comes out perfect despite this as you can see to the right of this. Each row does this and it appears as the get further into the row the more pronounced it gets. The first few lines don't seem to do this so with that I'm fairly sure this isn't by design. As you can probably tell the camera is petty zoomed in here so it looks worse than it actually is. It's hard to tell for sure but it doesn't seem the walls do this. The nozzle isn't clogged and the extruder isn't skipping here so I'm running out of ideas Anyone ever see this?

Settings (None have changed as far as I know)
Cura 5.1.0
Printer: Wanhao Duplicator i3+
Layer height/1st layer speed: .3/15mm/sec
Layer width is 100%
Nozzle: 0.4mm w/ 0.4mm line width


Thanks much
Dave